1259006720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31729}}^1$

素因数の和:31781

約数の個数: 72

約数和(自身を含む): 3113093760

約数和(自身を除く): 1854087040

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, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 31729, 39680, 63458, 126916, 158645, 253832, 317290, 507664, 634580, 983599, 1015328, 1269160, 1967198, 2030656, 2538320, 3934396, 4061312, 4917995, 5076640, 7868792, 8122624, 9835990, 10153280, 15737584, 19671980, 20306560, 31475168, 39343960, 40613120, 62950336, 78687920, 125900672, 157375840, 251801344, 314751680, 629503360, 1259006720]

約数ペア:

[(1, 1259006720), (2, 629503360), (4, 314751680), (5, 251801344), (8, 157375840), (10, 125900672), (16, 78687920), (20, 62950336), (31, 40613120), (32, 39343960), (40, 31475168), (62, 20306560), (64, 19671980), (80, 15737584), (124, 10153280), (128, 9835990), (155, 8122624), (160, 7868792), (248, 5076640), (256, 4917995), (310, 4061312), (320, 3934396), (496, 2538320), (620, 2030656), (640, 1967198), (992, 1269160), (1240, 1015328), (1280, 983599), (1984, 634580), (2480, 507664), (3968, 317290), (4960, 253832), (7936, 158645), (9920, 126916), (19840, 63458), (31729, 39680)]