21980556

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{701}}^1$

素因数の和:791

約数の個数: 72

約数和(自身を含む): 60815664

約数和(自身を除く): 38835108

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 67, 78, 117, 134, 156, 201, 234, 268, 402, 468, 603, 701, 804, 871, 1206, 1402, 1742, 2103, 2412, 2613, 2804, 3484, 4206, 5226, 6309, 7839, 8412, 9113, 10452, 12618, 15678, 18226, 25236, 27339, 31356, 36452, 46967, 54678, 82017, 93934, 109356, 140901, 164034, 187868, 281802, 328068, 422703, 563604, 610571, 845406, 1221142, 1690812, 1831713, 2442284, 3663426, 5495139, 7326852, 10990278, 21980556]

約数ペア:

[(1, 21980556), (2, 10990278), (3, 7326852), (4, 5495139), (6, 3663426), (9, 2442284), (12, 1831713), (13, 1690812), (18, 1221142), (26, 845406), (36, 610571), (39, 563604), (52, 422703), (67, 328068), (78, 281802), (117, 187868), (134, 164034), (156, 140901), (201, 109356), (234, 93934), (268, 82017), (402, 54678), (468, 46967), (603, 36452), (701, 31356), (804, 27339), (871, 25236), (1206, 18226), (1402, 15678), (1742, 12618), (2103, 10452), (2412, 9113), (2613, 8412), (2804, 7839), (3484, 6309), (4206, 5226)]