31356920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2113}}^1$

素因数の和:2184

約数の個数: 64

約数和(自身を含む): 82192320

約数和(自身を除く): 50835400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1484, 1855, 2113, 2120, 2968, 3710, 4226, 7420, 8452, 10565, 14791, 14840, 16904, 21130, 29582, 42260, 59164, 73955, 84520, 111989, 118328, 147910, 223978, 295820, 447956, 559945, 591640, 783923, 895912, 1119890, 1567846, 2239780, 3135692, 3919615, 4479560, 6271384, 7839230, 15678460, 31356920]

約数ペア:

[(1, 31356920), (2, 15678460), (4, 7839230), (5, 6271384), (7, 4479560), (8, 3919615), (10, 3135692), (14, 2239780), (20, 1567846), (28, 1119890), (35, 895912), (40, 783923), (53, 591640), (56, 559945), (70, 447956), (106, 295820), (140, 223978), (212, 147910), (265, 118328), (280, 111989), (371, 84520), (424, 73955), (530, 59164), (742, 42260), (1060, 29582), (1484, 21130), (1855, 16904), (2113, 14840), (2120, 14791), (2968, 10565), (3710, 8452), (4226, 7420)]