1640340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{701}}^1$

素因数の和:729

約数の個数: 72

約数和(自身を含む): 5366088

約数和(自身を除く): 3725748

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 701, 780, 1170, 1402, 2103, 2340, 2804, 3505, 4206, 6309, 7010, 8412, 9113, 10515, 12618, 14020, 18226, 21030, 25236, 27339, 31545, 36452, 42060, 45565, 54678, 63090, 82017, 91130, 109356, 126180, 136695, 164034, 182260, 273390, 328068, 410085, 546780, 820170, 1640340]

約数ペア:

[(1, 1640340), (2, 820170), (3, 546780), (4, 410085), (5, 328068), (6, 273390), (9, 182260), (10, 164034), (12, 136695), (13, 126180), (15, 109356), (18, 91130), (20, 82017), (26, 63090), (30, 54678), (36, 45565), (39, 42060), (45, 36452), (52, 31545), (60, 27339), (65, 25236), (78, 21030), (90, 18226), (117, 14020), (130, 12618), (156, 10515), (180, 9113), (195, 8412), (234, 7010), (260, 6309), (390, 4206), (468, 3505), (585, 2804), (701, 2340), (780, 2103), (1170, 1402)]