28386390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 71165952

約数和(自身を除く): 42779562

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 131, 155, 186, 233, 262, 310, 393, 465, 466, 655, 699, 786, 930, 1165, 1310, 1398, 1965, 2330, 3495, 3930, 4061, 6990, 7223, 8122, 12183, 14446, 20305, 21669, 24366, 30523, 36115, 40610, 43338, 60915, 61046, 72230, 91569, 108345, 121830, 152615, 183138, 216690, 305230, 457845, 915690, 946213, 1892426, 2838639, 4731065, 5677278, 9462130, 14193195, 28386390]

約数ペア:

[(1, 28386390), (2, 14193195), (3, 9462130), (5, 5677278), (6, 4731065), (10, 2838639), (15, 1892426), (30, 946213), (31, 915690), (62, 457845), (93, 305230), (131, 216690), (155, 183138), (186, 152615), (233, 121830), (262, 108345), (310, 91569), (393, 72230), (465, 61046), (466, 60915), (655, 43338), (699, 40610), (786, 36115), (930, 30523), (1165, 24366), (1310, 21669), (1398, 20305), (1965, 14446), (2330, 12183), (3495, 8122), (3930, 7223), (4061, 6990)]