20331040

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4099}}^1$

素因数の和:4145

約数の個数: 48

約数和(自身を含む): 49593600

約数和(自身を除く): 29262560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4099, 4960, 8198, 16396, 20495, 32792, 40990, 65584, 81980, 127069, 131168, 163960, 254138, 327920, 508276, 635345, 655840, 1016552, 1270690, 2033104, 2541380, 4066208, 5082760, 10165520, 20331040]

約数ペア:

[(1, 20331040), (2, 10165520), (4, 5082760), (5, 4066208), (8, 2541380), (10, 2033104), (16, 1270690), (20, 1016552), (31, 655840), (32, 635345), (40, 508276), (62, 327920), (80, 254138), (124, 163960), (155, 131168), (160, 127069), (248, 81980), (310, 65584), (496, 40990), (620, 32792), (992, 20495), (1240, 16396), (2480, 8198), (4099, 4960)]