401338880

素因数分解:

$2^9\times 5^1\times {\mathrm{211}}^1\times {\mathrm{743}}^1$

素因数の和:977

約数の個数: 80

約数和(自身を含む): 968134464

約数和(自身を除く): 566795584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 256, 320, 422, 512, 640, 743, 844, 1055, 1280, 1486, 1688, 2110, 2560, 2972, 3376, 3715, 4220, 5944, 6752, 7430, 8440, 11888, 13504, 14860, 16880, 23776, 27008, 29720, 33760, 47552, 54016, 59440, 67520, 95104, 108032, 118880, 135040, 156773, 190208, 237760, 270080, 313546, 380416, 475520, 540160, 627092, 783865, 951040, 1254184, 1567730, 1902080, 2508368, 3135460, 5016736, 6270920, 10033472, 12541840, 20066944, 25083680, 40133888, 50167360, 80267776, 100334720, 200669440, 401338880]

約数ペア:

[(1, 401338880), (2, 200669440), (4, 100334720), (5, 80267776), (8, 50167360), (10, 40133888), (16, 25083680), (20, 20066944), (32, 12541840), (40, 10033472), (64, 6270920), (80, 5016736), (128, 3135460), (160, 2508368), (211, 1902080), (256, 1567730), (320, 1254184), (422, 951040), (512, 783865), (640, 627092), (743, 540160), (844, 475520), (1055, 380416), (1280, 313546), (1486, 270080), (1688, 237760), (2110, 190208), (2560, 156773), (2972, 135040), (3376, 118880), (3715, 108032), (4220, 95104), (5944, 67520), (6752, 59440), (7430, 54016), (8440, 47552), (11888, 33760), (13504, 29720), (14860, 27008), (16880, 23776)]