21783996

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 60081840

約数和(自身を除く): 38297844

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 89, 117, 156, 178, 234, 267, 356, 468, 523, 534, 801, 1046, 1068, 1157, 1569, 1602, 2092, 2314, 3138, 3204, 3471, 4628, 4707, 6276, 6799, 6942, 9414, 10413, 13598, 13884, 18828, 20397, 20826, 27196, 40794, 41652, 46547, 61191, 81588, 93094, 122382, 139641, 186188, 244764, 279282, 418923, 558564, 605111, 837846, 1210222, 1675692, 1815333, 2420444, 3630666, 5445999, 7261332, 10891998, 21783996]

約数ペア:

[(1, 21783996), (2, 10891998), (3, 7261332), (4, 5445999), (6, 3630666), (9, 2420444), (12, 1815333), (13, 1675692), (18, 1210222), (26, 837846), (36, 605111), (39, 558564), (52, 418923), (78, 279282), (89, 244764), (117, 186188), (156, 139641), (178, 122382), (234, 93094), (267, 81588), (356, 61191), (468, 46547), (523, 41652), (534, 40794), (801, 27196), (1046, 20826), (1068, 20397), (1157, 18828), (1569, 13884), (1602, 13598), (2092, 10413), (2314, 9414), (3138, 6942), (3204, 6799), (3471, 6276), (4628, 4707)]