81987660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:229

約数の個数: 192

約数和(自身を含む): 274982400

約数和(自身を除く): 192994740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 61, 76, 90, 95, 108, 114, 122, 131, 135, 171, 180, 183, 190, 228, 244, 262, 270, 285, 305, 342, 366, 380, 393, 513, 524, 540, 549, 570, 610, 655, 684, 732, 786, 855, 915, 1026, 1098, 1140, 1159, 1179, 1220, 1310, 1572, 1647, 1710, 1830, 1965, 2052, 2196, 2318, 2358, 2489, 2565, 2620, 2745, 3294, 3420, 3477, 3537, 3660, 3930, 4636, 4716, 4978, 5130, 5490, 5795, 5895, 6588, 6954, 7074, 7467, 7860, 7991, 8235, 9956, 10260, 10431, 10980, 11590, 11790, 12445, 13908, 14148, 14934, 15982, 16470, 17385, 17685, 20862, 22401, 23180, 23580, 23973, 24890, 29868, 31293, 31964, 32940, 34770, 35370, 37335, 39955, 41724, 44802, 47946, 49780, 52155, 62586, 67203, 69540, 70740, 71919, 74670, 79910, 89604, 95892, 104310, 112005, 119865, 125172, 134406, 143838, 149340, 151829, 156465, 159820, 208620, 215757, 224010, 239730, 268812, 287676, 303658, 312930, 336015, 359595, 431514, 448020, 455487, 479460, 607316, 625860, 672030, 719190, 759145, 863028, 910974, 1078785, 1344060, 1366461, 1438380, 1518290, 1821948, 2157570, 2277435, 2732922, 3036580, 4099383, 4315140, 4554870, 5465844, 6832305, 8198766, 9109740, 13664610, 16397532, 20496915, 27329220, 40993830, 81987660]

約数ペア:

[(1, 81987660), (2, 40993830), (3, 27329220), (4, 20496915), (5, 16397532), (6, 13664610), (9, 9109740), (10, 8198766), (12, 6832305), (15, 5465844), (18, 4554870), (19, 4315140), (20, 4099383), (27, 3036580), (30, 2732922), (36, 2277435), (38, 2157570), (45, 1821948), (54, 1518290), (57, 1438380), (60, 1366461), (61, 1344060), (76, 1078785), (90, 910974), (95, 863028), (108, 759145), (114, 719190), (122, 672030), (131, 625860), (135, 607316), (171, 479460), (180, 455487), (183, 448020), (190, 431514), (228, 359595), (244, 336015), (262, 312930), (270, 303658), (285, 287676), (305, 268812), (342, 239730), (366, 224010), (380, 215757), (393, 208620), (513, 159820), (524, 156465), (540, 151829), (549, 149340), (570, 143838), (610, 134406), (655, 125172), (684, 119865), (732, 112005), (786, 104310), (855, 95892), (915, 89604), (1026, 79910), (1098, 74670), (1140, 71919), (1159, 70740), (1179, 69540), (1220, 67203), (1310, 62586), (1572, 52155), (1647, 49780), (1710, 47946), (1830, 44802), (1965, 41724), (2052, 39955), (2196, 37335), (2318, 35370), (2358, 34770), (2489, 32940), (2565, 31964), (2620, 31293), (2745, 29868), (3294, 24890), (3420, 23973), (3477, 23580), (3537, 23180), (3660, 22401), (3930, 20862), (4636, 17685), (4716, 17385), (4978, 16470), (5130, 15982), (5490, 14934), (5795, 14148), (5895, 13908), (6588, 12445), (6954, 11790), (7074, 11590), (7467, 10980), (7860, 10431), (7991, 10260), (8235, 9956)]