21191170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 128

約数和(自身を含む): 53706240

約数和(自身を除く): 32515070

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 29, 35, 55, 58, 65, 70, 73, 77, 91, 110, 130, 143, 145, 146, 154, 182, 203, 286, 290, 319, 365, 377, 385, 406, 455, 511, 638, 715, 730, 754, 770, 803, 910, 949, 1001, 1015, 1022, 1430, 1595, 1606, 1885, 1898, 2002, 2030, 2117, 2233, 2555, 2639, 3190, 3770, 4015, 4147, 4234, 4466, 4745, 5005, 5110, 5278, 5621, 6643, 8030, 8294, 9490, 10010, 10439, 10585, 11165, 11242, 13195, 13286, 14819, 20735, 20878, 21170, 22330, 23287, 26390, 27521, 28105, 29029, 29638, 33215, 41470, 46574, 52195, 55042, 56210, 58058, 66430, 73073, 74095, 104390, 116435, 137605, 145145, 146146, 148190, 163009, 192647, 232870, 275210, 290290, 302731, 326018, 365365, 385294, 605462, 730730, 815045, 963235, 1513655, 1630090, 1926470, 2119117, 3027310, 4238234, 10595585, 21191170]

約数ペア:

[(1, 21191170), (2, 10595585), (5, 4238234), (7, 3027310), (10, 2119117), (11, 1926470), (13, 1630090), (14, 1513655), (22, 963235), (26, 815045), (29, 730730), (35, 605462), (55, 385294), (58, 365365), (65, 326018), (70, 302731), (73, 290290), (77, 275210), (91, 232870), (110, 192647), (130, 163009), (143, 148190), (145, 146146), (146, 145145), (154, 137605), (182, 116435), (203, 104390), (286, 74095), (290, 73073), (319, 66430), (365, 58058), (377, 56210), (385, 55042), (406, 52195), (455, 46574), (511, 41470), (638, 33215), (715, 29638), (730, 29029), (754, 28105), (770, 27521), (803, 26390), (910, 23287), (949, 22330), (1001, 21170), (1015, 20878), (1022, 20735), (1430, 14819), (1595, 13286), (1606, 13195), (1885, 11242), (1898, 11165), (2002, 10585), (2030, 10439), (2117, 10010), (2233, 9490), (2555, 8294), (2639, 8030), (3190, 6643), (3770, 5621), (4015, 5278), (4147, 5110), (4234, 5005), (4466, 4745)]