20021508

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 35015292

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 179, 234, 239, 358, 468, 478, 537, 716, 717, 956, 1074, 1434, 1611, 2148, 2151, 2327, 2868, 3107, 3222, 4302, 4654, 6214, 6444, 6981, 8604, 9308, 9321, 12428, 13962, 18642, 20943, 27924, 27963, 37284, 41886, 42781, 55926, 83772, 85562, 111852, 128343, 171124, 256686, 385029, 513372, 556153, 770058, 1112306, 1540116, 1668459, 2224612, 3336918, 5005377, 6673836, 10010754, 20021508]

約数ペア:

[(1, 20021508), (2, 10010754), (3, 6673836), (4, 5005377), (6, 3336918), (9, 2224612), (12, 1668459), (13, 1540116), (18, 1112306), (26, 770058), (36, 556153), (39, 513372), (52, 385029), (78, 256686), (117, 171124), (156, 128343), (179, 111852), (234, 85562), (239, 83772), (358, 55926), (468, 42781), (478, 41886), (537, 37284), (716, 27963), (717, 27924), (956, 20943), (1074, 18642), (1434, 13962), (1611, 12428), (2148, 9321), (2151, 9308), (2327, 8604), (2868, 6981), (3107, 6444), (3222, 6214), (4302, 4654)]