28491320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1$

素因数の和:345

約数の個数: 128

約数和(自身を含む): 80015040

約数和(自身を除く): 51523720

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 17, 20, 22, 26, 34, 40, 44, 52, 55, 65, 68, 85, 88, 104, 110, 130, 136, 143, 170, 187, 220, 221, 260, 286, 293, 340, 374, 440, 442, 520, 572, 586, 680, 715, 748, 884, 935, 1105, 1144, 1172, 1430, 1465, 1496, 1768, 1870, 2210, 2344, 2431, 2860, 2930, 3223, 3740, 3809, 4420, 4862, 4981, 5720, 5860, 6446, 7480, 7618, 8840, 9724, 9962, 11720, 12155, 12892, 15236, 16115, 19045, 19448, 19924, 24310, 24905, 25784, 30472, 32230, 38090, 39848, 41899, 48620, 49810, 54791, 64460, 64753, 76180, 83798, 97240, 99620, 109582, 128920, 129506, 152360, 167596, 199240, 209495, 219164, 259012, 273955, 323765, 335192, 418990, 438328, 518024, 547910, 647530, 712283, 837980, 1095820, 1295060, 1424566, 1675960, 2191640, 2590120, 2849132, 3561415, 5698264, 7122830, 14245660, 28491320]

約数ペア:

[(1, 28491320), (2, 14245660), (4, 7122830), (5, 5698264), (8, 3561415), (10, 2849132), (11, 2590120), (13, 2191640), (17, 1675960), (20, 1424566), (22, 1295060), (26, 1095820), (34, 837980), (40, 712283), (44, 647530), (52, 547910), (55, 518024), (65, 438328), (68, 418990), (85, 335192), (88, 323765), (104, 273955), (110, 259012), (130, 219164), (136, 209495), (143, 199240), (170, 167596), (187, 152360), (220, 129506), (221, 128920), (260, 109582), (286, 99620), (293, 97240), (340, 83798), (374, 76180), (440, 64753), (442, 64460), (520, 54791), (572, 49810), (586, 48620), (680, 41899), (715, 39848), (748, 38090), (884, 32230), (935, 30472), (1105, 25784), (1144, 24905), (1172, 24310), (1430, 19924), (1465, 19448), (1496, 19045), (1768, 16115), (1870, 15236), (2210, 12892), (2344, 12155), (2431, 11720), (2860, 9962), (2930, 9724), (3223, 8840), (3740, 7618), (3809, 7480), (4420, 6446), (4862, 5860), (4981, 5720)]