257970440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{541}}^1$

素因数の和:703

約数の個数: 128

約数和(自身を含む): 721163520

約数和(自身を除く): 463193080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 131, 140, 182, 260, 262, 280, 364, 455, 520, 524, 541, 655, 728, 910, 917, 1048, 1082, 1310, 1703, 1820, 1834, 2164, 2620, 2705, 3406, 3640, 3668, 3787, 4328, 4585, 5240, 5410, 6812, 7033, 7336, 7574, 8515, 9170, 10820, 11921, 13624, 14066, 15148, 17030, 18340, 18935, 21640, 23842, 28132, 30296, 34060, 35165, 36680, 37870, 47684, 49231, 56264, 59605, 68120, 70330, 70871, 75740, 95368, 98462, 119210, 140660, 141742, 151480, 196924, 238420, 246155, 281320, 283484, 354355, 393848, 476840, 492310, 496097, 566968, 708710, 921323, 984620, 992194, 1417420, 1842646, 1969240, 1984388, 2480485, 2834840, 3685292, 3968776, 4606615, 4960970, 6449261, 7370584, 9213230, 9921940, 12898522, 18426460, 19843880, 25797044, 32246305, 36852920, 51594088, 64492610, 128985220, 257970440]

約数ペア:

[(1, 257970440), (2, 128985220), (4, 64492610), (5, 51594088), (7, 36852920), (8, 32246305), (10, 25797044), (13, 19843880), (14, 18426460), (20, 12898522), (26, 9921940), (28, 9213230), (35, 7370584), (40, 6449261), (52, 4960970), (56, 4606615), (65, 3968776), (70, 3685292), (91, 2834840), (104, 2480485), (130, 1984388), (131, 1969240), (140, 1842646), (182, 1417420), (260, 992194), (262, 984620), (280, 921323), (364, 708710), (455, 566968), (520, 496097), (524, 492310), (541, 476840), (655, 393848), (728, 354355), (910, 283484), (917, 281320), (1048, 246155), (1082, 238420), (1310, 196924), (1703, 151480), (1820, 141742), (1834, 140660), (2164, 119210), (2620, 98462), (2705, 95368), (3406, 75740), (3640, 70871), (3668, 70330), (3787, 68120), (4328, 59605), (4585, 56264), (5240, 49231), (5410, 47684), (6812, 37870), (7033, 36680), (7336, 35165), (7574, 34060), (8515, 30296), (9170, 28132), (10820, 23842), (11921, 21640), (13624, 18935), (14066, 18340), (15148, 17030)]