28205840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{733}}^1$

素因数の和:796

約数の個数: 80

約数和(自身を含む): 72630768

約数和(自身を除く): 44424928

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 592, 733, 740, 962, 1040, 1466, 1480, 1924, 2405, 2932, 2960, 3665, 3848, 4810, 5864, 7330, 7696, 9529, 9620, 11728, 14660, 19058, 19240, 27121, 29320, 38116, 38480, 47645, 54242, 58640, 76232, 95290, 108484, 135605, 152464, 190580, 216968, 271210, 352573, 381160, 433936, 542420, 705146, 762320, 1084840, 1410292, 1762865, 2169680, 2820584, 3525730, 5641168, 7051460, 14102920, 28205840]

約数ペア:

[(1, 28205840), (2, 14102920), (4, 7051460), (5, 5641168), (8, 3525730), (10, 2820584), (13, 2169680), (16, 1762865), (20, 1410292), (26, 1084840), (37, 762320), (40, 705146), (52, 542420), (65, 433936), (74, 381160), (80, 352573), (104, 271210), (130, 216968), (148, 190580), (185, 152464), (208, 135605), (260, 108484), (296, 95290), (370, 76232), (481, 58640), (520, 54242), (592, 47645), (733, 38480), (740, 38116), (962, 29320), (1040, 27121), (1466, 19240), (1480, 19058), (1924, 14660), (2405, 11728), (2932, 9620), (2960, 9529), (3665, 7696), (3848, 7330), (4810, 5864)]