201518720

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:542

約数の個数: 128

約数和(自身を含む): 529759440

約数和(自身を除く): 328240720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 64, 65, 80, 104, 106, 128, 130, 160, 208, 212, 260, 265, 320, 416, 424, 457, 520, 530, 640, 689, 832, 848, 914, 1040, 1060, 1378, 1664, 1696, 1828, 2080, 2120, 2285, 2756, 3392, 3445, 3656, 4160, 4240, 4570, 5512, 5941, 6784, 6890, 7312, 8320, 8480, 9140, 11024, 11882, 13780, 14624, 16960, 18280, 22048, 23764, 24221, 27560, 29248, 29705, 33920, 36560, 44096, 47528, 48442, 55120, 58496, 59410, 73120, 88192, 95056, 96884, 110240, 118820, 121105, 146240, 190112, 193768, 220480, 237640, 242210, 292480, 314873, 380224, 387536, 440960, 475280, 484420, 629746, 760448, 775072, 950560, 968840, 1259492, 1550144, 1574365, 1901120, 1937680, 2518984, 3100288, 3148730, 3802240, 3875360, 5037968, 6297460, 7750720, 10075936, 12594920, 15501440, 20151872, 25189840, 40303744, 50379680, 100759360, 201518720]

約数ペア:

[(1, 201518720), (2, 100759360), (4, 50379680), (5, 40303744), (8, 25189840), (10, 20151872), (13, 15501440), (16, 12594920), (20, 10075936), (26, 7750720), (32, 6297460), (40, 5037968), (52, 3875360), (53, 3802240), (64, 3148730), (65, 3100288), (80, 2518984), (104, 1937680), (106, 1901120), (128, 1574365), (130, 1550144), (160, 1259492), (208, 968840), (212, 950560), (260, 775072), (265, 760448), (320, 629746), (416, 484420), (424, 475280), (457, 440960), (520, 387536), (530, 380224), (640, 314873), (689, 292480), (832, 242210), (848, 237640), (914, 220480), (1040, 193768), (1060, 190112), (1378, 146240), (1664, 121105), (1696, 118820), (1828, 110240), (2080, 96884), (2120, 95056), (2285, 88192), (2756, 73120), (3392, 59410), (3445, 58496), (3656, 55120), (4160, 48442), (4240, 47528), (4570, 44096), (5512, 36560), (5941, 33920), (6784, 29705), (6890, 29248), (7312, 27560), (8320, 24221), (8480, 23764), (9140, 22048), (11024, 18280), (11882, 16960), (13780, 14624)]