31505920

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:451

約数の個数: 80

約数和(自身を含む): 78173568

約数和(自身を除く): 46667648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 397, 496, 512, 620, 640, 794, 992, 1240, 1280, 1588, 1984, 1985, 2480, 2560, 3176, 3968, 3970, 4960, 6352, 7936, 7940, 9920, 12307, 12704, 15872, 15880, 19840, 24614, 25408, 31760, 39680, 49228, 50816, 61535, 63520, 79360, 98456, 101632, 123070, 127040, 196912, 203264, 246140, 254080, 393824, 492280, 508160, 787648, 984560, 1016320, 1575296, 1969120, 3150592, 3938240, 6301184, 7876480, 15752960, 31505920]

約数ペア:

[(1, 31505920), (2, 15752960), (4, 7876480), (5, 6301184), (8, 3938240), (10, 3150592), (16, 1969120), (20, 1575296), (31, 1016320), (32, 984560), (40, 787648), (62, 508160), (64, 492280), (80, 393824), (124, 254080), (128, 246140), (155, 203264), (160, 196912), (248, 127040), (256, 123070), (310, 101632), (320, 98456), (397, 79360), (496, 63520), (512, 61535), (620, 50816), (640, 49228), (794, 39680), (992, 31760), (1240, 25408), (1280, 24614), (1588, 19840), (1984, 15880), (1985, 15872), (2480, 12704), (2560, 12307), (3176, 9920), (3968, 7940), (3970, 7936), (4960, 6352)]