81948020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:573

約数の個数: 96

約数和(自身を含む): 216760320

約数和(自身を除く): 134812300

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 127, 140, 154, 220, 254, 308, 385, 419, 508, 635, 770, 838, 889, 1270, 1397, 1540, 1676, 1778, 2095, 2540, 2794, 2933, 3556, 4190, 4445, 4609, 5588, 5866, 6985, 8380, 8890, 9218, 9779, 11732, 13970, 14665, 17780, 18436, 19558, 23045, 27940, 29330, 32263, 39116, 46090, 48895, 53213, 58660, 64526, 92180, 97790, 106426, 129052, 161315, 195580, 212852, 266065, 322630, 372491, 532130, 585343, 645260, 744982, 1064260, 1170686, 1489964, 1862455, 2341372, 2926715, 3724910, 4097401, 5853430, 7449820, 8194802, 11706860, 16389604, 20487005, 40974010, 81948020]

約数ペア:

[(1, 81948020), (2, 40974010), (4, 20487005), (5, 16389604), (7, 11706860), (10, 8194802), (11, 7449820), (14, 5853430), (20, 4097401), (22, 3724910), (28, 2926715), (35, 2341372), (44, 1862455), (55, 1489964), (70, 1170686), (77, 1064260), (110, 744982), (127, 645260), (140, 585343), (154, 532130), (220, 372491), (254, 322630), (308, 266065), (385, 212852), (419, 195580), (508, 161315), (635, 129052), (770, 106426), (838, 97790), (889, 92180), (1270, 64526), (1397, 58660), (1540, 53213), (1676, 48895), (1778, 46090), (2095, 39116), (2540, 32263), (2794, 29330), (2933, 27940), (3556, 23045), (4190, 19558), (4445, 18436), (4609, 17780), (5588, 14665), (5866, 13970), (6985, 11732), (8380, 9779), (8890, 9218)]