21916960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:326

約数の個数: 96

約数和(自身を含む): 57344112

約数和(自身を除く): 35427152

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 41, 52, 65, 80, 82, 104, 130, 160, 164, 205, 208, 257, 260, 328, 410, 416, 514, 520, 533, 656, 820, 1028, 1040, 1066, 1285, 1312, 1640, 2056, 2080, 2132, 2570, 2665, 3280, 3341, 4112, 4264, 5140, 5330, 6560, 6682, 8224, 8528, 10280, 10537, 10660, 13364, 16705, 17056, 20560, 21074, 21320, 26728, 33410, 41120, 42148, 42640, 52685, 53456, 66820, 84296, 85280, 105370, 106912, 133640, 136981, 168592, 210740, 267280, 273962, 337184, 421480, 534560, 547924, 684905, 842960, 1095848, 1369810, 1685920, 2191696, 2739620, 4383392, 5479240, 10958480, 21916960]

約数ペア:

[(1, 21916960), (2, 10958480), (4, 5479240), (5, 4383392), (8, 2739620), (10, 2191696), (13, 1685920), (16, 1369810), (20, 1095848), (26, 842960), (32, 684905), (40, 547924), (41, 534560), (52, 421480), (65, 337184), (80, 273962), (82, 267280), (104, 210740), (130, 168592), (160, 136981), (164, 133640), (205, 106912), (208, 105370), (257, 85280), (260, 84296), (328, 66820), (410, 53456), (416, 52685), (514, 42640), (520, 42148), (533, 41120), (656, 33410), (820, 26728), (1028, 21320), (1040, 21074), (1066, 20560), (1285, 17056), (1312, 16705), (1640, 13364), (2056, 10660), (2080, 10537), (2132, 10280), (2570, 8528), (2665, 8224), (3280, 6682), (3341, 6560), (4112, 5330), (4264, 5140)]