201997380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{258971}}^1$

素因数の和:258996

約数の個数: 48

約数和(自身を含む): 609102144

約数和(自身を除く): 407104764

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, 258971, 517942, 776913, 1035884, 1294855, 1553826, 2589710, 3107652, 3366623, 3884565, 5179420, 6733246, 7769130, 10099869, 13466492, 15538260, 16833115, 20199738, 33666230, 40399476, 50499345, 67332460, 100998690, 201997380]

約数ペア:

[(1, 201997380), (2, 100998690), (3, 67332460), (4, 50499345), (5, 40399476), (6, 33666230), (10, 20199738), (12, 16833115), (13, 15538260), (15, 13466492), (20, 10099869), (26, 7769130), (30, 6733246), (39, 5179420), (52, 3884565), (60, 3366623), (65, 3107652), (78, 2589710), (130, 1553826), (156, 1294855), (195, 1035884), (260, 776913), (390, 517942), (780, 258971)]