78424020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1054

約数の個数: 144

約数和(自身を含む): 261555840

約数和(自身を除く): 183131820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 23, 30, 36, 38, 45, 46, 57, 60, 69, 76, 90, 92, 95, 114, 115, 138, 171, 180, 190, 207, 228, 230, 276, 285, 342, 345, 380, 414, 437, 460, 570, 684, 690, 828, 855, 874, 997, 1035, 1140, 1311, 1380, 1710, 1748, 1994, 2070, 2185, 2622, 2991, 3420, 3933, 3988, 4140, 4370, 4985, 5244, 5982, 6555, 7866, 8740, 8973, 9970, 11964, 13110, 14955, 15732, 17946, 18943, 19665, 19940, 22931, 26220, 29910, 35892, 37886, 39330, 44865, 45862, 56829, 59820, 68793, 75772, 78660, 89730, 91724, 94715, 113658, 114655, 137586, 170487, 179460, 189430, 206379, 227316, 229310, 275172, 284145, 340974, 343965, 378860, 412758, 435689, 458620, 568290, 681948, 687930, 825516, 852435, 871378, 1031895, 1136580, 1307067, 1375860, 1704870, 1742756, 2063790, 2178445, 2614134, 3409740, 3921201, 4127580, 4356890, 5228268, 6535335, 7842402, 8713780, 13070670, 15684804, 19606005, 26141340, 39212010, 78424020]

約数ペア:

[(1, 78424020), (2, 39212010), (3, 26141340), (4, 19606005), (5, 15684804), (6, 13070670), (9, 8713780), (10, 7842402), (12, 6535335), (15, 5228268), (18, 4356890), (19, 4127580), (20, 3921201), (23, 3409740), (30, 2614134), (36, 2178445), (38, 2063790), (45, 1742756), (46, 1704870), (57, 1375860), (60, 1307067), (69, 1136580), (76, 1031895), (90, 871378), (92, 852435), (95, 825516), (114, 687930), (115, 681948), (138, 568290), (171, 458620), (180, 435689), (190, 412758), (207, 378860), (228, 343965), (230, 340974), (276, 284145), (285, 275172), (342, 229310), (345, 227316), (380, 206379), (414, 189430), (437, 179460), (460, 170487), (570, 137586), (684, 114655), (690, 113658), (828, 94715), (855, 91724), (874, 89730), (997, 78660), (1035, 75772), (1140, 68793), (1311, 59820), (1380, 56829), (1710, 45862), (1748, 44865), (1994, 39330), (2070, 37886), (2185, 35892), (2622, 29910), (2991, 26220), (3420, 22931), (3933, 19940), (3988, 19665), (4140, 18943), (4370, 17946), (4985, 15732), (5244, 14955), (5982, 13110), (6555, 11964), (7866, 9970), (8740, 8973)]