21417420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{727}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 60173568

約数和(自身を除く): 38756148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 491, 727, 982, 1454, 1473, 1964, 2181, 2455, 2908, 2946, 3635, 4362, 4910, 5892, 7270, 7365, 8724, 9820, 10905, 14540, 14730, 21810, 29460, 43620, 356957, 713914, 1070871, 1427828, 1784785, 2141742, 3569570, 4283484, 5354355, 7139140, 10708710, 21417420]

約数ペア:

[(1, 21417420), (2, 10708710), (3, 7139140), (4, 5354355), (5, 4283484), (6, 3569570), (10, 2141742), (12, 1784785), (15, 1427828), (20, 1070871), (30, 713914), (60, 356957), (491, 43620), (727, 29460), (982, 21810), (1454, 14730), (1473, 14540), (1964, 10905), (2181, 9820), (2455, 8724), (2908, 7365), (2946, 7270), (3635, 5892), (4362, 4910)]