1721420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 3937248

約数和(自身を除く): 2215828

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 83, 85, 122, 166, 170, 244, 305, 332, 340, 415, 610, 830, 1037, 1220, 1411, 1660, 2074, 2822, 4148, 5063, 5185, 5644, 7055, 10126, 10370, 14110, 20252, 20740, 25315, 28220, 50630, 86071, 101260, 172142, 344284, 430355, 860710, 1721420]

約数ペア:

[(1, 1721420), (2, 860710), (4, 430355), (5, 344284), (10, 172142), (17, 101260), (20, 86071), (34, 50630), (61, 28220), (68, 25315), (83, 20740), (85, 20252), (122, 14110), (166, 10370), (170, 10126), (244, 7055), (305, 5644), (332, 5185), (340, 5063), (415, 4148), (610, 2822), (830, 2074), (1037, 1660), (1220, 1411)]