61121980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{569}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 132723360

約数和(自身を除く): 71601380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 131, 164, 205, 262, 410, 524, 569, 655, 820, 1138, 1310, 2276, 2620, 2845, 5371, 5690, 10742, 11380, 21484, 23329, 26855, 46658, 53710, 74539, 93316, 107420, 116645, 149078, 233290, 298156, 372695, 466580, 745390, 1490780, 3056099, 6112198, 12224396, 15280495, 30560990, 61121980]

約数ペア:

[(1, 61121980), (2, 30560990), (4, 15280495), (5, 12224396), (10, 6112198), (20, 3056099), (41, 1490780), (82, 745390), (131, 466580), (164, 372695), (205, 298156), (262, 233290), (410, 149078), (524, 116645), (569, 107420), (655, 93316), (820, 74539), (1138, 53710), (1310, 46658), (2276, 26855), (2620, 23329), (2845, 21484), (5371, 11380), (5690, 10742)]