251636840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{947}}^1$

素因数の和:1051

約数の個数: 128

約数和(自身を含む): 707132160

約数和(自身を除く): 455495320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 73, 91, 104, 130, 140, 146, 182, 260, 280, 292, 364, 365, 455, 511, 520, 584, 728, 730, 910, 947, 949, 1022, 1460, 1820, 1894, 1898, 2044, 2555, 2920, 3640, 3788, 3796, 4088, 4735, 4745, 5110, 6629, 6643, 7576, 7592, 9470, 9490, 10220, 12311, 13258, 13286, 18940, 18980, 20440, 24622, 26516, 26572, 33145, 33215, 37880, 37960, 49244, 53032, 53144, 61555, 66290, 66430, 69131, 86177, 98488, 123110, 132580, 132860, 138262, 172354, 246220, 265160, 265720, 276524, 344708, 345655, 430885, 483917, 492440, 553048, 689416, 691310, 861770, 898703, 967834, 1382620, 1723540, 1797406, 1935668, 2419585, 2765240, 3447080, 3594812, 3871336, 4493515, 4839170, 6290921, 7189624, 8987030, 9678340, 12581842, 17974060, 19356680, 25163684, 31454605, 35948120, 50327368, 62909210, 125818420, 251636840]

約数ペア:

[(1, 251636840), (2, 125818420), (4, 62909210), (5, 50327368), (7, 35948120), (8, 31454605), (10, 25163684), (13, 19356680), (14, 17974060), (20, 12581842), (26, 9678340), (28, 8987030), (35, 7189624), (40, 6290921), (52, 4839170), (56, 4493515), (65, 3871336), (70, 3594812), (73, 3447080), (91, 2765240), (104, 2419585), (130, 1935668), (140, 1797406), (146, 1723540), (182, 1382620), (260, 967834), (280, 898703), (292, 861770), (364, 691310), (365, 689416), (455, 553048), (511, 492440), (520, 483917), (584, 430885), (728, 345655), (730, 344708), (910, 276524), (947, 265720), (949, 265160), (1022, 246220), (1460, 172354), (1820, 138262), (1894, 132860), (1898, 132580), (2044, 123110), (2555, 98488), (2920, 86177), (3640, 69131), (3788, 66430), (3796, 66290), (4088, 61555), (4735, 53144), (4745, 53032), (5110, 49244), (6629, 37960), (6643, 37880), (7576, 33215), (7592, 33145), (9470, 26572), (9490, 26516), (10220, 24622), (12311, 20440), (13258, 18980), (13286, 18940)]