69781420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 149925888

約数和(自身を除く): 80144468

約数列:

[1, 2, 4, 5, 10, 20, 83, 127, 166, 254, 331, 332, 415, 508, 635, 662, 830, 1270, 1324, 1655, 1660, 2540, 3310, 6620, 10541, 21082, 27473, 42037, 42164, 52705, 54946, 84074, 105410, 109892, 137365, 168148, 210185, 210820, 274730, 420370, 549460, 840740, 3489071, 6978142, 13956284, 17445355, 34890710, 69781420]

約数ペア:

[(1, 69781420), (2, 34890710), (4, 17445355), (5, 13956284), (10, 6978142), (20, 3489071), (83, 840740), (127, 549460), (166, 420370), (254, 274730), (331, 210820), (332, 210185), (415, 168148), (508, 137365), (635, 109892), (662, 105410), (830, 84074), (1270, 54946), (1324, 52705), (1655, 42164), (1660, 42037), (2540, 27473), (3310, 21082), (6620, 10541)]