20784540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 192

約数和(自身を含む): 73156608

約数和(自身を除く): 52372068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 41, 42, 51, 60, 68, 70, 71, 82, 84, 85, 102, 105, 119, 123, 140, 142, 164, 170, 204, 205, 210, 213, 238, 246, 255, 284, 287, 340, 355, 357, 410, 420, 426, 476, 492, 497, 510, 574, 595, 615, 697, 710, 714, 820, 852, 861, 994, 1020, 1065, 1148, 1190, 1207, 1230, 1394, 1420, 1428, 1435, 1491, 1722, 1785, 1988, 2091, 2130, 2380, 2414, 2460, 2485, 2788, 2870, 2911, 2982, 3444, 3485, 3570, 3621, 4182, 4260, 4305, 4828, 4879, 4970, 5740, 5822, 5964, 6035, 6970, 7140, 7242, 7455, 8364, 8449, 8610, 8733, 9758, 9940, 10455, 11644, 12070, 13940, 14484, 14555, 14637, 14910, 16898, 17220, 17466, 18105, 19516, 20377, 20910, 24140, 24395, 25347, 29110, 29274, 29820, 33796, 34932, 36210, 40754, 41820, 42245, 43665, 48790, 49487, 50694, 58220, 58548, 61131, 72420, 73185, 81508, 84490, 87330, 97580, 98974, 101388, 101885, 122262, 126735, 146370, 148461, 168980, 174660, 197948, 203770, 244524, 247435, 253470, 292740, 296922, 305655, 346409, 407540, 494870, 506940, 593844, 611310, 692818, 742305, 989740, 1039227, 1222620, 1385636, 1484610, 1732045, 2078454, 2969220, 3464090, 4156908, 5196135, 6928180, 10392270, 20784540]

約数ペア:

[(1, 20784540), (2, 10392270), (3, 6928180), (4, 5196135), (5, 4156908), (6, 3464090), (7, 2969220), (10, 2078454), (12, 1732045), (14, 1484610), (15, 1385636), (17, 1222620), (20, 1039227), (21, 989740), (28, 742305), (30, 692818), (34, 611310), (35, 593844), (41, 506940), (42, 494870), (51, 407540), (60, 346409), (68, 305655), (70, 296922), (71, 292740), (82, 253470), (84, 247435), (85, 244524), (102, 203770), (105, 197948), (119, 174660), (123, 168980), (140, 148461), (142, 146370), (164, 126735), (170, 122262), (204, 101885), (205, 101388), (210, 98974), (213, 97580), (238, 87330), (246, 84490), (255, 81508), (284, 73185), (287, 72420), (340, 61131), (355, 58548), (357, 58220), (410, 50694), (420, 49487), (426, 48790), (476, 43665), (492, 42245), (497, 41820), (510, 40754), (574, 36210), (595, 34932), (615, 33796), (697, 29820), (710, 29274), (714, 29110), (820, 25347), (852, 24395), (861, 24140), (994, 20910), (1020, 20377), (1065, 19516), (1148, 18105), (1190, 17466), (1207, 17220), (1230, 16898), (1394, 14910), (1420, 14637), (1428, 14555), (1435, 14484), (1491, 13940), (1722, 12070), (1785, 11644), (1988, 10455), (2091, 9940), (2130, 9758), (2380, 8733), (2414, 8610), (2460, 8449), (2485, 8364), (2788, 7455), (2870, 7242), (2911, 7140), (2982, 6970), (3444, 6035), (3485, 5964), (3570, 5822), (3621, 5740), (4182, 4970), (4260, 4879), (4305, 4828)]