261862440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1213}}^1$

素因数の和:1491

約数の個数: 128

約数和(自身を含む): 902050560

約数和(自身を除く): 640188120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 257, 280, 420, 514, 771, 840, 1028, 1213, 1285, 1542, 1799, 2056, 2426, 2570, 3084, 3598, 3639, 3855, 4852, 5140, 5397, 6065, 6168, 7196, 7278, 7710, 8491, 8995, 9704, 10280, 10794, 12130, 14392, 14556, 15420, 16982, 17990, 18195, 21588, 24260, 25473, 26985, 29112, 30840, 33964, 35980, 36390, 42455, 43176, 48520, 50946, 53970, 67928, 71960, 72780, 84910, 101892, 107940, 127365, 145560, 169820, 203784, 215880, 254730, 311741, 339640, 509460, 623482, 935223, 1018920, 1246964, 1558705, 1870446, 2182187, 2493928, 3117410, 3740892, 4364374, 4676115, 6234820, 6546561, 7481784, 8728748, 9352230, 10910935, 12469640, 13093122, 17457496, 18704460, 21821870, 26186244, 32732805, 37408920, 43643740, 52372488, 65465610, 87287480, 130931220, 261862440]

約数ペア:

[(1, 261862440), (2, 130931220), (3, 87287480), (4, 65465610), (5, 52372488), (6, 43643740), (7, 37408920), (8, 32732805), (10, 26186244), (12, 21821870), (14, 18704460), (15, 17457496), (20, 13093122), (21, 12469640), (24, 10910935), (28, 9352230), (30, 8728748), (35, 7481784), (40, 6546561), (42, 6234820), (56, 4676115), (60, 4364374), (70, 3740892), (84, 3117410), (105, 2493928), (120, 2182187), (140, 1870446), (168, 1558705), (210, 1246964), (257, 1018920), (280, 935223), (420, 623482), (514, 509460), (771, 339640), (840, 311741), (1028, 254730), (1213, 215880), (1285, 203784), (1542, 169820), (1799, 145560), (2056, 127365), (2426, 107940), (2570, 101892), (3084, 84910), (3598, 72780), (3639, 71960), (3855, 67928), (4852, 53970), (5140, 50946), (5397, 48520), (6065, 43176), (6168, 42455), (7196, 36390), (7278, 35980), (7710, 33964), (8491, 30840), (8995, 29112), (9704, 26985), (10280, 25473), (10794, 24260), (12130, 21588), (14392, 18195), (14556, 17990), (15420, 16982)]