64650920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 154180800

約数和(自身を除く): 89529880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 257, 331, 380, 514, 662, 760, 1028, 1285, 1324, 1655, 2056, 2570, 2648, 3310, 4883, 5140, 6289, 6620, 9766, 10280, 12578, 13240, 19532, 24415, 25156, 31445, 39064, 48830, 50312, 62890, 85067, 97660, 125780, 170134, 195320, 251560, 340268, 425335, 680536, 850670, 1616273, 1701340, 3232546, 3402680, 6465092, 8081365, 12930184, 16162730, 32325460, 64650920]

約数ペア:

[(1, 64650920), (2, 32325460), (4, 16162730), (5, 12930184), (8, 8081365), (10, 6465092), (19, 3402680), (20, 3232546), (38, 1701340), (40, 1616273), (76, 850670), (95, 680536), (152, 425335), (190, 340268), (257, 251560), (331, 195320), (380, 170134), (514, 125780), (662, 97660), (760, 85067), (1028, 62890), (1285, 50312), (1324, 48830), (1655, 39064), (2056, 31445), (2570, 25156), (2648, 24415), (3310, 19532), (4883, 13240), (5140, 12578), (6289, 10280), (6620, 9766)]