28667960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{563}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 69033600

約数和(自身を除く): 40365640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 190, 268, 335, 380, 536, 563, 670, 760, 1126, 1273, 1340, 2252, 2546, 2680, 2815, 4504, 5092, 5630, 6365, 10184, 10697, 11260, 12730, 21394, 22520, 25460, 37721, 42788, 50920, 53485, 75442, 85576, 106970, 150884, 188605, 213940, 301768, 377210, 427880, 716699, 754420, 1433398, 1508840, 2866796, 3583495, 5733592, 7166990, 14333980, 28667960]

約数ペア:

[(1, 28667960), (2, 14333980), (4, 7166990), (5, 5733592), (8, 3583495), (10, 2866796), (19, 1508840), (20, 1433398), (38, 754420), (40, 716699), (67, 427880), (76, 377210), (95, 301768), (134, 213940), (152, 188605), (190, 150884), (268, 106970), (335, 85576), (380, 75442), (536, 53485), (563, 50920), (670, 42788), (760, 37721), (1126, 25460), (1273, 22520), (1340, 21394), (2252, 12730), (2546, 11260), (2680, 10697), (2815, 10184), (4504, 6365), (5092, 5630)]