1277331380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{288989}}^1$

素因数の和:289028

約数の個数: 48

約数和(自身を含む): 3058670160

約数和(自身を除く): 1781338780

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 288989, 577978, 1155956, 1444945, 2889890, 3756857, 4912813, 5779780, 7513714, 9825626, 15027428, 18784285, 19651252, 24564065, 37568570, 49128130, 63866569, 75137140, 98256260, 127733138, 255466276, 319332845, 638665690, 1277331380]

約数ペア:

[(1, 1277331380), (2, 638665690), (4, 319332845), (5, 255466276), (10, 127733138), (13, 98256260), (17, 75137140), (20, 63866569), (26, 49128130), (34, 37568570), (52, 24564065), (65, 19651252), (68, 18784285), (85, 15027428), (130, 9825626), (170, 7513714), (221, 5779780), (260, 4912813), (340, 3756857), (442, 2889890), (884, 1444945), (1105, 1155956), (2210, 577978), (4420, 288989)]