121211220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155399}}^1$

素因数の和:155424

約数の個数: 48

約数和(自身を含む): 365500800

約数和(自身を除く): 244289580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 155399, 310798, 466197, 621596, 776995, 932394, 1553990, 1864788, 2020187, 2330985, 3107980, 4040374, 4661970, 6060561, 8080748, 9323940, 10100935, 12121122, 20201870, 24242244, 30302805, 40403740, 60605610, 121211220]

約数ペア:

[(1, 121211220), (2, 60605610), (3, 40403740), (4, 30302805), (5, 24242244), (6, 20201870), (10, 12121122), (12, 10100935), (13, 9323940), (15, 8080748), (20, 6060561), (26, 4661970), (30, 4040374), (39, 3107980), (52, 2330985), (60, 2020187), (65, 1864788), (78, 1553990), (130, 932394), (156, 776995), (195, 621596), (260, 466197), (390, 310798), (780, 155399)]