31457940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 91808640

約数和(自身を除く): 60350700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 89, 129, 137, 172, 178, 215, 258, 267, 274, 356, 411, 430, 445, 516, 534, 548, 645, 685, 822, 860, 890, 1068, 1290, 1335, 1370, 1644, 1780, 2055, 2580, 2670, 2740, 3827, 4110, 5340, 5891, 7654, 8220, 11481, 11782, 12193, 15308, 17673, 19135, 22962, 23564, 24386, 29455, 35346, 36579, 38270, 45924, 48772, 57405, 58910, 60965, 70692, 73158, 76540, 88365, 114810, 117820, 121930, 146316, 176730, 182895, 229620, 243860, 353460, 365790, 524299, 731580, 1048598, 1572897, 2097196, 2621495, 3145794, 5242990, 6291588, 7864485, 10485980, 15728970, 31457940]

約数ペア:

[(1, 31457940), (2, 15728970), (3, 10485980), (4, 7864485), (5, 6291588), (6, 5242990), (10, 3145794), (12, 2621495), (15, 2097196), (20, 1572897), (30, 1048598), (43, 731580), (60, 524299), (86, 365790), (89, 353460), (129, 243860), (137, 229620), (172, 182895), (178, 176730), (215, 146316), (258, 121930), (267, 117820), (274, 114810), (356, 88365), (411, 76540), (430, 73158), (445, 70692), (516, 60965), (534, 58910), (548, 57405), (645, 48772), (685, 45924), (822, 38270), (860, 36579), (890, 35346), (1068, 29455), (1290, 24386), (1335, 23564), (1370, 22962), (1644, 19135), (1780, 17673), (2055, 15308), (2580, 12193), (2670, 11782), (2740, 11481), (3827, 8220), (4110, 7654), (5340, 5891)]