20278440

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{619}}^1$

素因数の和:656

約数の個数: 192

約数和(自身を含む): 81244800

約数和(自身を除く): 60966360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 117, 120, 126, 130, 140, 156, 168, 180, 182, 195, 210, 234, 252, 260, 273, 280, 312, 315, 360, 364, 390, 420, 455, 468, 504, 520, 546, 585, 619, 630, 728, 780, 819, 840, 910, 936, 1092, 1170, 1238, 1260, 1365, 1560, 1638, 1820, 1857, 2184, 2340, 2476, 2520, 2730, 3095, 3276, 3640, 3714, 4095, 4333, 4680, 4952, 5460, 5571, 6190, 6552, 7428, 8047, 8190, 8666, 9285, 10920, 11142, 12380, 12999, 14856, 16094, 16380, 17332, 18570, 21665, 22284, 24141, 24760, 25998, 27855, 32188, 32760, 34664, 37140, 38997, 40235, 43330, 44568, 48282, 51996, 55710, 56329, 64376, 64995, 72423, 74280, 77994, 80470, 86660, 96564, 103992, 111420, 112658, 120705, 129990, 144846, 155988, 160940, 168987, 173320, 193128, 194985, 222840, 225316, 241410, 259980, 281645, 289692, 311976, 321880, 337974, 362115, 389970, 450632, 482820, 506961, 519960, 563290, 579384, 675948, 724230, 779940, 844935, 965640, 1013922, 1126580, 1351896, 1448460, 1559880, 1689870, 2027844, 2253160, 2534805, 2896920, 3379740, 4055688, 5069610, 6759480, 10139220, 20278440]

約数ペア:

[(1, 20278440), (2, 10139220), (3, 6759480), (4, 5069610), (5, 4055688), (6, 3379740), (7, 2896920), (8, 2534805), (9, 2253160), (10, 2027844), (12, 1689870), (13, 1559880), (14, 1448460), (15, 1351896), (18, 1126580), (20, 1013922), (21, 965640), (24, 844935), (26, 779940), (28, 724230), (30, 675948), (35, 579384), (36, 563290), (39, 519960), (40, 506961), (42, 482820), (45, 450632), (52, 389970), (56, 362115), (60, 337974), (63, 321880), (65, 311976), (70, 289692), (72, 281645), (78, 259980), (84, 241410), (90, 225316), (91, 222840), (104, 194985), (105, 193128), (117, 173320), (120, 168987), (126, 160940), (130, 155988), (140, 144846), (156, 129990), (168, 120705), (180, 112658), (182, 111420), (195, 103992), (210, 96564), (234, 86660), (252, 80470), (260, 77994), (273, 74280), (280, 72423), (312, 64995), (315, 64376), (360, 56329), (364, 55710), (390, 51996), (420, 48282), (455, 44568), (468, 43330), (504, 40235), (520, 38997), (546, 37140), (585, 34664), (619, 32760), (630, 32188), (728, 27855), (780, 25998), (819, 24760), (840, 24141), (910, 22284), (936, 21665), (1092, 18570), (1170, 17332), (1238, 16380), (1260, 16094), (1365, 14856), (1560, 12999), (1638, 12380), (1820, 11142), (1857, 10920), (2184, 9285), (2340, 8666), (2476, 8190), (2520, 8047), (2730, 7428), (3095, 6552), (3276, 6190), (3640, 5571), (3714, 5460), (4095, 4952), (4333, 4680)]