81511860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{22271}}^1$

素因数の和:22344

約数の個数: 48

約数和(自身を含む): 231985152

約数和(自身を除く): 150473292

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 22271, 44542, 66813, 89084, 111355, 133626, 222710, 267252, 334065, 445420, 668130, 1336260, 1358531, 2717062, 4075593, 5434124, 6792655, 8151186, 13585310, 16302372, 20377965, 27170620, 40755930, 81511860]

約数ペア:

[(1, 81511860), (2, 40755930), (3, 27170620), (4, 20377965), (5, 16302372), (6, 13585310), (10, 8151186), (12, 6792655), (15, 5434124), (20, 4075593), (30, 2717062), (60, 1358531), (61, 1336260), (122, 668130), (183, 445420), (244, 334065), (305, 267252), (366, 222710), (610, 133626), (732, 111355), (915, 89084), (1220, 66813), (1830, 44542), (3660, 22271)]