28169820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:384

約数の個数: 144

約数和(自身を含む): 99240960

約数和(自身を除く): 71071140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 79, 84, 90, 105, 126, 140, 158, 180, 210, 237, 252, 283, 315, 316, 395, 420, 474, 553, 566, 630, 711, 790, 849, 948, 1106, 1132, 1185, 1260, 1415, 1422, 1580, 1659, 1698, 1981, 2212, 2370, 2547, 2765, 2830, 2844, 3318, 3396, 3555, 3962, 4245, 4740, 4977, 5094, 5530, 5660, 5943, 6636, 7110, 7924, 8295, 8490, 9905, 9954, 10188, 11060, 11886, 12735, 14220, 16590, 16980, 17829, 19810, 19908, 22357, 23772, 24885, 25470, 29715, 33180, 35658, 39620, 44714, 49770, 50940, 59430, 67071, 71316, 89145, 89428, 99540, 111785, 118860, 134142, 156499, 178290, 201213, 223570, 268284, 312998, 335355, 356580, 402426, 447140, 469497, 625996, 670710, 782495, 804852, 938994, 1006065, 1341420, 1408491, 1564990, 1877988, 2012130, 2347485, 2816982, 3129980, 4024260, 4694970, 5633964, 7042455, 9389940, 14084910, 28169820]

約数ペア:

[(1, 28169820), (2, 14084910), (3, 9389940), (4, 7042455), (5, 5633964), (6, 4694970), (7, 4024260), (9, 3129980), (10, 2816982), (12, 2347485), (14, 2012130), (15, 1877988), (18, 1564990), (20, 1408491), (21, 1341420), (28, 1006065), (30, 938994), (35, 804852), (36, 782495), (42, 670710), (45, 625996), (60, 469497), (63, 447140), (70, 402426), (79, 356580), (84, 335355), (90, 312998), (105, 268284), (126, 223570), (140, 201213), (158, 178290), (180, 156499), (210, 134142), (237, 118860), (252, 111785), (283, 99540), (315, 89428), (316, 89145), (395, 71316), (420, 67071), (474, 59430), (553, 50940), (566, 49770), (630, 44714), (711, 39620), (790, 35658), (849, 33180), (948, 29715), (1106, 25470), (1132, 24885), (1185, 23772), (1260, 22357), (1415, 19908), (1422, 19810), (1580, 17829), (1659, 16980), (1698, 16590), (1981, 14220), (2212, 12735), (2370, 11886), (2547, 11060), (2765, 10188), (2830, 9954), (2844, 9905), (3318, 8490), (3396, 8295), (3555, 7924), (3962, 7110), (4245, 6636), (4740, 5943), (4977, 5660), (5094, 5530)]