21320760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1399}}^1$

素因数の和:1540

約数の個数: 64

約数和(自身を含む): 64512000

約数和(自身を除く): 43191240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 127, 254, 381, 508, 635, 762, 1016, 1270, 1399, 1524, 1905, 2540, 2798, 3048, 3810, 4197, 5080, 5596, 6995, 7620, 8394, 11192, 13990, 15240, 16788, 20985, 27980, 33576, 41970, 55960, 83940, 167880, 177673, 355346, 533019, 710692, 888365, 1066038, 1421384, 1776730, 2132076, 2665095, 3553460, 4264152, 5330190, 7106920, 10660380, 21320760]

約数ペア:

[(1, 21320760), (2, 10660380), (3, 7106920), (4, 5330190), (5, 4264152), (6, 3553460), (8, 2665095), (10, 2132076), (12, 1776730), (15, 1421384), (20, 1066038), (24, 888365), (30, 710692), (40, 533019), (60, 355346), (120, 177673), (127, 167880), (254, 83940), (381, 55960), (508, 41970), (635, 33576), (762, 27980), (1016, 20985), (1270, 16788), (1399, 15240), (1524, 13990), (1905, 11192), (2540, 8394), (2798, 7620), (3048, 6995), (3810, 5596), (4197, 5080)]