20822480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1$

素因数の和:161

約数の個数: 120

約数和(自身を含む): 58960512

約数和(自身を除く): 38138032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 103, 112, 133, 140, 152, 190, 206, 266, 280, 304, 361, 380, 412, 515, 532, 560, 665, 721, 722, 760, 824, 1030, 1064, 1330, 1442, 1444, 1520, 1648, 1805, 1957, 2060, 2128, 2527, 2660, 2884, 2888, 3605, 3610, 3914, 4120, 5054, 5320, 5768, 5776, 7210, 7220, 7828, 8240, 9785, 10108, 10640, 11536, 12635, 13699, 14420, 14440, 15656, 19570, 20216, 25270, 27398, 28840, 28880, 31312, 37183, 39140, 40432, 50540, 54796, 57680, 68495, 74366, 78280, 101080, 109592, 136990, 148732, 156560, 185915, 202160, 219184, 260281, 273980, 297464, 371830, 520562, 547960, 594928, 743660, 1041124, 1095920, 1301405, 1487320, 2082248, 2602810, 2974640, 4164496, 5205620, 10411240, 20822480]

約数ペア:

[(1, 20822480), (2, 10411240), (4, 5205620), (5, 4164496), (7, 2974640), (8, 2602810), (10, 2082248), (14, 1487320), (16, 1301405), (19, 1095920), (20, 1041124), (28, 743660), (35, 594928), (38, 547960), (40, 520562), (56, 371830), (70, 297464), (76, 273980), (80, 260281), (95, 219184), (103, 202160), (112, 185915), (133, 156560), (140, 148732), (152, 136990), (190, 109592), (206, 101080), (266, 78280), (280, 74366), (304, 68495), (361, 57680), (380, 54796), (412, 50540), (515, 40432), (532, 39140), (560, 37183), (665, 31312), (721, 28880), (722, 28840), (760, 27398), (824, 25270), (1030, 20216), (1064, 19570), (1330, 15656), (1442, 14440), (1444, 14420), (1520, 13699), (1648, 12635), (1805, 11536), (1957, 10640), (2060, 10108), (2128, 9785), (2527, 8240), (2660, 7828), (2884, 7220), (2888, 7210), (3605, 5776), (3610, 5768), (3914, 5320), (4120, 5054)]