89801980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{281}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 206322480

約数和(自身を除く): 116520500

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 281, 290, 380, 551, 562, 580, 841, 1102, 1124, 1405, 1682, 2204, 2755, 2810, 3364, 4205, 5339, 5510, 5620, 8149, 8410, 10678, 11020, 15979, 16298, 16820, 21356, 26695, 31958, 32596, 40745, 53390, 63916, 79895, 81490, 106780, 154831, 159790, 162980, 236321, 309662, 319580, 472642, 619324, 774155, 945284, 1181605, 1548310, 2363210, 3096620, 4490099, 4726420, 8980198, 17960396, 22450495, 44900990, 89801980]

約数ペア:

[(1, 89801980), (2, 44900990), (4, 22450495), (5, 17960396), (10, 8980198), (19, 4726420), (20, 4490099), (29, 3096620), (38, 2363210), (58, 1548310), (76, 1181605), (95, 945284), (116, 774155), (145, 619324), (190, 472642), (281, 319580), (290, 309662), (380, 236321), (551, 162980), (562, 159790), (580, 154831), (841, 106780), (1102, 81490), (1124, 79895), (1405, 63916), (1682, 53390), (2204, 40745), (2755, 32596), (2810, 31958), (3364, 26695), (4205, 21356), (5339, 16820), (5510, 16298), (5620, 15979), (8149, 11020), (8410, 10678)]