81372780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7411}}^1$

素因数の和:7487

約数の個数: 72

約数和(自身を含む): 250911024

約数和(自身を除く): 169538244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 7411, 10980, 14822, 22233, 29644, 37055, 44466, 66699, 74110, 88932, 111165, 133398, 148220, 222330, 266796, 333495, 444660, 452071, 666990, 904142, 1333980, 1356213, 1808284, 2260355, 2712426, 4068639, 4520710, 5424852, 6781065, 8137278, 9041420, 13562130, 16274556, 20343195, 27124260, 40686390, 81372780]

約数ペア:

[(1, 81372780), (2, 40686390), (3, 27124260), (4, 20343195), (5, 16274556), (6, 13562130), (9, 9041420), (10, 8137278), (12, 6781065), (15, 5424852), (18, 4520710), (20, 4068639), (30, 2712426), (36, 2260355), (45, 1808284), (60, 1356213), (61, 1333980), (90, 904142), (122, 666990), (180, 452071), (183, 444660), (244, 333495), (305, 266796), (366, 222330), (549, 148220), (610, 133398), (732, 111165), (915, 88932), (1098, 74110), (1220, 66699), (1830, 44466), (2196, 37055), (2745, 29644), (3660, 22233), (5490, 14822), (7411, 10980)]