21017178

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1$

素因数の和:98

約数の個数: 144

約数和(自身を含む): 60082560

約数和(自身を除く): 39065382

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 47, 49, 54, 63, 78, 91, 94, 98, 117, 126, 141, 147, 169, 182, 189, 234, 273, 282, 294, 329, 338, 351, 378, 423, 441, 507, 546, 611, 637, 658, 702, 819, 846, 882, 987, 1014, 1183, 1222, 1269, 1274, 1323, 1521, 1638, 1833, 1911, 1974, 2303, 2366, 2457, 2538, 2646, 2961, 3042, 3549, 3666, 3822, 4277, 4563, 4606, 4914, 5499, 5733, 5922, 6909, 7098, 7943, 8281, 8554, 8883, 9126, 10647, 10998, 11466, 12831, 13818, 15886, 16497, 16562, 17199, 17766, 20727, 21294, 23829, 24843, 25662, 29939, 31941, 32994, 34398, 38493, 41454, 47658, 49686, 55601, 59878, 62181, 63882, 71487, 74529, 76986, 89817, 111202, 115479, 124362, 142974, 149058, 166803, 179634, 214461, 223587, 230958, 269451, 333606, 389207, 428922, 447174, 500409, 538902, 778414, 808353, 1000818, 1167621, 1501227, 1616706, 2335242, 3002454, 3502863, 7005726, 10508589, 21017178]

約数ペア:

[(1, 21017178), (2, 10508589), (3, 7005726), (6, 3502863), (7, 3002454), (9, 2335242), (13, 1616706), (14, 1501227), (18, 1167621), (21, 1000818), (26, 808353), (27, 778414), (39, 538902), (42, 500409), (47, 447174), (49, 428922), (54, 389207), (63, 333606), (78, 269451), (91, 230958), (94, 223587), (98, 214461), (117, 179634), (126, 166803), (141, 149058), (147, 142974), (169, 124362), (182, 115479), (189, 111202), (234, 89817), (273, 76986), (282, 74529), (294, 71487), (329, 63882), (338, 62181), (351, 59878), (378, 55601), (423, 49686), (441, 47658), (507, 41454), (546, 38493), (611, 34398), (637, 32994), (658, 31941), (702, 29939), (819, 25662), (846, 24843), (882, 23829), (987, 21294), (1014, 20727), (1183, 17766), (1222, 17199), (1269, 16562), (1274, 16497), (1323, 15886), (1521, 13818), (1638, 12831), (1833, 11466), (1911, 10998), (1974, 10647), (2303, 9126), (2366, 8883), (2457, 8554), (2538, 8281), (2646, 7943), (2961, 7098), (3042, 6909), (3549, 5922), (3666, 5733), (3822, 5499), (4277, 4914), (4563, 4606)]