31972780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 81285120

約数和(自身を除く): 49312340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 53, 62, 70, 106, 124, 139, 140, 155, 212, 217, 265, 278, 310, 371, 434, 530, 556, 620, 695, 742, 868, 973, 1060, 1085, 1390, 1484, 1643, 1855, 1946, 2170, 2780, 3286, 3710, 3892, 4309, 4340, 4865, 6572, 7367, 7420, 8215, 8618, 9730, 11501, 14734, 16430, 17236, 19460, 21545, 23002, 29468, 30163, 32860, 36835, 43090, 46004, 51569, 57505, 60326, 73670, 86180, 103138, 115010, 120652, 147340, 150815, 206276, 228377, 230020, 257845, 301630, 456754, 515690, 603260, 913508, 1031380, 1141885, 1598639, 2283770, 3197278, 4567540, 6394556, 7993195, 15986390, 31972780]

約数ペア:

[(1, 31972780), (2, 15986390), (4, 7993195), (5, 6394556), (7, 4567540), (10, 3197278), (14, 2283770), (20, 1598639), (28, 1141885), (31, 1031380), (35, 913508), (53, 603260), (62, 515690), (70, 456754), (106, 301630), (124, 257845), (139, 230020), (140, 228377), (155, 206276), (212, 150815), (217, 147340), (265, 120652), (278, 115010), (310, 103138), (371, 86180), (434, 73670), (530, 60326), (556, 57505), (620, 51569), (695, 46004), (742, 43090), (868, 36835), (973, 32860), (1060, 30163), (1085, 29468), (1390, 23002), (1484, 21545), (1643, 19460), (1855, 17236), (1946, 16430), (2170, 14734), (2780, 11501), (3286, 9730), (3710, 8618), (3892, 8215), (4309, 7420), (4340, 7367), (4865, 6572)]