204189920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 144

約数和(自身を含む): 542959200

約数和(自身を除く): 338769280

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 53, 55, 80, 88, 106, 110, 121, 160, 176, 199, 212, 220, 242, 265, 352, 398, 424, 440, 484, 530, 583, 605, 796, 848, 880, 968, 995, 1060, 1166, 1210, 1592, 1696, 1760, 1936, 1990, 2120, 2189, 2332, 2420, 2915, 3184, 3872, 3980, 4240, 4378, 4664, 4840, 5830, 6368, 6413, 7960, 8480, 8756, 9328, 9680, 10547, 10945, 11660, 12826, 15920, 17512, 18656, 19360, 21094, 21890, 23320, 24079, 25652, 31840, 32065, 35024, 42188, 43780, 46640, 48158, 51304, 52735, 64130, 70048, 84376, 87560, 93280, 96316, 102608, 105470, 116017, 120395, 128260, 168752, 175120, 192632, 205216, 210940, 232034, 240790, 256520, 337504, 350240, 385264, 421880, 464068, 481580, 513040, 580085, 770528, 843760, 928136, 963160, 1026080, 1160170, 1276187, 1687520, 1856272, 1926320, 2320340, 2552374, 3712544, 3852640, 4640680, 5104748, 6380935, 9281360, 10209496, 12761870, 18562720, 20418992, 25523740, 40837984, 51047480, 102094960, 204189920]

約数ペア:

[(1, 204189920), (2, 102094960), (4, 51047480), (5, 40837984), (8, 25523740), (10, 20418992), (11, 18562720), (16, 12761870), (20, 10209496), (22, 9281360), (32, 6380935), (40, 5104748), (44, 4640680), (53, 3852640), (55, 3712544), (80, 2552374), (88, 2320340), (106, 1926320), (110, 1856272), (121, 1687520), (160, 1276187), (176, 1160170), (199, 1026080), (212, 963160), (220, 928136), (242, 843760), (265, 770528), (352, 580085), (398, 513040), (424, 481580), (440, 464068), (484, 421880), (530, 385264), (583, 350240), (605, 337504), (796, 256520), (848, 240790), (880, 232034), (968, 210940), (995, 205216), (1060, 192632), (1166, 175120), (1210, 168752), (1592, 128260), (1696, 120395), (1760, 116017), (1936, 105470), (1990, 102608), (2120, 96316), (2189, 93280), (2332, 87560), (2420, 84376), (2915, 70048), (3184, 64130), (3872, 52735), (3980, 51304), (4240, 48158), (4378, 46640), (4664, 43780), (4840, 42188), (5830, 35024), (6368, 32065), (6413, 31840), (7960, 25652), (8480, 24079), (8756, 23320), (9328, 21890), (9680, 21094), (10547, 19360), (10945, 18656), (11660, 17512), (12826, 15920)]