311964160

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3931}}^1$

素因数の和:3985

約数の個数: 80

約数和(自身を含む): 772307712

約数和(自身を除く): 460343552

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, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3931, 3968, 4960, 7862, 7936, 9920, 15724, 15872, 19655, 19840, 31448, 39310, 39680, 62896, 78620, 79360, 121861, 125792, 157240, 243722, 251584, 314480, 487444, 503168, 609305, 628960, 974888, 1006336, 1218610, 1257920, 1949776, 2012672, 2437220, 2515840, 3899552, 4874440, 5031680, 7799104, 9748880, 10063360, 15598208, 19497760, 31196416, 38995520, 62392832, 77991040, 155982080, 311964160]

約数ペア:

[(1, 311964160), (2, 155982080), (4, 77991040), (5, 62392832), (8, 38995520), (10, 31196416), (16, 19497760), (20, 15598208), (31, 10063360), (32, 9748880), (40, 7799104), (62, 5031680), (64, 4874440), (80, 3899552), (124, 2515840), (128, 2437220), (155, 2012672), (160, 1949776), (248, 1257920), (256, 1218610), (310, 1006336), (320, 974888), (496, 628960), (512, 609305), (620, 503168), (640, 487444), (992, 314480), (1240, 251584), (1280, 243722), (1984, 157240), (2480, 125792), (2560, 121861), (3931, 79360), (3968, 78620), (4960, 62896), (7862, 39680), (7936, 39310), (9920, 31448), (15724, 19840), (15872, 19655)]