20700560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:552

約数の個数: 80

約数和(自身を含む): 52710912

約数和(自身を除く): 32010352

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 310, 340, 491, 496, 527, 620, 680, 982, 1054, 1240, 1360, 1964, 2108, 2455, 2480, 2635, 3928, 4216, 4910, 5270, 7856, 8347, 8432, 9820, 10540, 15221, 16694, 19640, 21080, 30442, 33388, 39280, 41735, 42160, 60884, 66776, 76105, 83470, 121768, 133552, 152210, 166940, 243536, 258757, 304420, 333880, 517514, 608840, 667760, 1035028, 1217680, 1293785, 2070056, 2587570, 4140112, 5175140, 10350280, 20700560]

約数ペア:

[(1, 20700560), (2, 10350280), (4, 5175140), (5, 4140112), (8, 2587570), (10, 2070056), (16, 1293785), (17, 1217680), (20, 1035028), (31, 667760), (34, 608840), (40, 517514), (62, 333880), (68, 304420), (80, 258757), (85, 243536), (124, 166940), (136, 152210), (155, 133552), (170, 121768), (248, 83470), (272, 76105), (310, 66776), (340, 60884), (491, 42160), (496, 41735), (527, 39280), (620, 33388), (680, 30442), (982, 21080), (1054, 19640), (1240, 16694), (1360, 15221), (1964, 10540), (2108, 9820), (2455, 8432), (2480, 8347), (2635, 7856), (3928, 5270), (4216, 4910)]