84218920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{577}}^1$

素因数の和:718

約数の個数: 64

約数和(自身を含む): 196635600

約数和(自身を除く): 112416680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 89, 164, 178, 205, 328, 356, 410, 445, 577, 712, 820, 890, 1154, 1640, 1780, 2308, 2885, 3560, 3649, 4616, 5770, 7298, 11540, 14596, 18245, 23080, 23657, 29192, 36490, 47314, 51353, 72980, 94628, 102706, 118285, 145960, 189256, 205412, 236570, 256765, 410824, 473140, 513530, 946280, 1027060, 2054120, 2105473, 4210946, 8421892, 10527365, 16843784, 21054730, 42109460, 84218920]

約数ペア:

[(1, 84218920), (2, 42109460), (4, 21054730), (5, 16843784), (8, 10527365), (10, 8421892), (20, 4210946), (40, 2105473), (41, 2054120), (82, 1027060), (89, 946280), (164, 513530), (178, 473140), (205, 410824), (328, 256765), (356, 236570), (410, 205412), (445, 189256), (577, 145960), (712, 118285), (820, 102706), (890, 94628), (1154, 72980), (1640, 51353), (1780, 47314), (2308, 36490), (2885, 29192), (3560, 23657), (3649, 23080), (4616, 18245), (5770, 14596), (7298, 11540)]