320499920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8329}}^1$

素因数の和:8392

約数の個数: 80

約数和(自身を含む): 824270160

約数和(自身を除く): 503770240

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, 740, 962, 1040, 1480, 1924, 2405, 2960, 3848, 4810, 7696, 8329, 9620, 16658, 19240, 33316, 38480, 41645, 66632, 83290, 108277, 133264, 166580, 216554, 308173, 333160, 433108, 541385, 616346, 666320, 866216, 1082770, 1232692, 1540865, 1732432, 2165540, 2465384, 3081730, 4006249, 4331080, 4930768, 6163460, 8012498, 8662160, 12326920, 16024996, 20031245, 24653840, 32049992, 40062490, 64099984, 80124980, 160249960, 320499920]

約数ペア:

[(1, 320499920), (2, 160249960), (4, 80124980), (5, 64099984), (8, 40062490), (10, 32049992), (13, 24653840), (16, 20031245), (20, 16024996), (26, 12326920), (37, 8662160), (40, 8012498), (52, 6163460), (65, 4930768), (74, 4331080), (80, 4006249), (104, 3081730), (130, 2465384), (148, 2165540), (185, 1732432), (208, 1540865), (260, 1232692), (296, 1082770), (370, 866216), (481, 666320), (520, 616346), (592, 541385), (740, 433108), (962, 333160), (1040, 308173), (1480, 216554), (1924, 166580), (2405, 133264), (2960, 108277), (3848, 83290), (4810, 66632), (7696, 41645), (8329, 38480), (9620, 33316), (16658, 19240)]