51244760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{461}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 132390720

約数和(自身を除く): 81145960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 397, 461, 794, 922, 1588, 1844, 1985, 2305, 2779, 3176, 3227, 3688, 3970, 4610, 5558, 6454, 7940, 9220, 11116, 12908, 13895, 15880, 16135, 18440, 22232, 25816, 27790, 32270, 55580, 64540, 111160, 129080, 183017, 366034, 732068, 915085, 1281119, 1464136, 1830170, 2562238, 3660340, 5124476, 6405595, 7320680, 10248952, 12811190, 25622380, 51244760]

約数ペア:

[(1, 51244760), (2, 25622380), (4, 12811190), (5, 10248952), (7, 7320680), (8, 6405595), (10, 5124476), (14, 3660340), (20, 2562238), (28, 1830170), (35, 1464136), (40, 1281119), (56, 915085), (70, 732068), (140, 366034), (280, 183017), (397, 129080), (461, 111160), (794, 64540), (922, 55580), (1588, 32270), (1844, 27790), (1985, 25816), (2305, 22232), (2779, 18440), (3176, 16135), (3227, 15880), (3688, 13895), (3970, 12908), (4610, 11116), (5558, 9220), (6454, 7940)]