81718480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:524

約数の個数: 80

約数和(自身を含む): 198987264

約数和(自身を除く): 117268784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 124, 155, 166, 248, 310, 332, 397, 415, 496, 620, 664, 794, 830, 1240, 1328, 1588, 1660, 1985, 2480, 2573, 3176, 3320, 3970, 5146, 6352, 6640, 7940, 10292, 12307, 12865, 15880, 20584, 24614, 25730, 31760, 32951, 41168, 49228, 51460, 61535, 65902, 98456, 102920, 123070, 131804, 164755, 196912, 205840, 246140, 263608, 329510, 492280, 527216, 659020, 984560, 1021481, 1318040, 2042962, 2636080, 4085924, 5107405, 8171848, 10214810, 16343696, 20429620, 40859240, 81718480]

約数ペア:

[(1, 81718480), (2, 40859240), (4, 20429620), (5, 16343696), (8, 10214810), (10, 8171848), (16, 5107405), (20, 4085924), (31, 2636080), (40, 2042962), (62, 1318040), (80, 1021481), (83, 984560), (124, 659020), (155, 527216), (166, 492280), (248, 329510), (310, 263608), (332, 246140), (397, 205840), (415, 196912), (496, 164755), (620, 131804), (664, 123070), (794, 102920), (830, 98456), (1240, 65902), (1328, 61535), (1588, 51460), (1660, 49228), (1985, 41168), (2480, 32951), (2573, 31760), (3176, 25730), (3320, 24614), (3970, 20584), (5146, 15880), (6352, 12865), (6640, 12307), (7940, 10292)]