21508733240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1\times {\mathrm{10847}}^1$

素因数の和:11504

約数の個数: 64

約数和(自身を含む): 49030790400

約数和(自身を除く): 27522057160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 557, 712, 890, 1114, 1780, 2228, 2785, 3560, 4456, 5570, 10847, 11140, 21694, 22280, 43388, 49573, 54235, 86776, 99146, 108470, 198292, 216940, 247865, 396584, 433880, 495730, 965383, 991460, 1930766, 1982920, 3861532, 4826915, 6041779, 7723064, 9653830, 12083558, 19307660, 24167116, 30208895, 38615320, 48334232, 60417790, 120835580, 241671160, 537718331, 1075436662, 2150873324, 2688591655, 4301746648, 5377183310, 10754366620, 21508733240]

約数ペア:

[(1, 21508733240), (2, 10754366620), (4, 5377183310), (5, 4301746648), (8, 2688591655), (10, 2150873324), (20, 1075436662), (40, 537718331), (89, 241671160), (178, 120835580), (356, 60417790), (445, 48334232), (557, 38615320), (712, 30208895), (890, 24167116), (1114, 19307660), (1780, 12083558), (2228, 9653830), (2785, 7723064), (3560, 6041779), (4456, 4826915), (5570, 3861532), (10847, 1982920), (11140, 1930766), (21694, 991460), (22280, 965383), (43388, 495730), (49573, 433880), (54235, 396584), (86776, 247865), (99146, 216940), (108470, 198292)]