28440240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{727}}^1$

素因数の和:906

約数の個数: 80

約数和(自身を含む): 88827648

約数和(自身を除く): 60387408

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 652, 727, 815, 978, 1304, 1454, 1630, 1956, 2181, 2445, 2608, 2908, 3260, 3635, 3912, 4362, 4890, 5816, 6520, 7270, 7824, 8724, 9780, 10905, 11632, 13040, 14540, 17448, 19560, 21810, 29080, 34896, 39120, 43620, 58160, 87240, 118501, 174480, 237002, 355503, 474004, 592505, 711006, 948008, 1185010, 1422012, 1777515, 1896016, 2370020, 2844024, 3555030, 4740040, 5688048, 7110060, 9480080, 14220120, 28440240]

約数ペア:

[(1, 28440240), (2, 14220120), (3, 9480080), (4, 7110060), (5, 5688048), (6, 4740040), (8, 3555030), (10, 2844024), (12, 2370020), (15, 1896016), (16, 1777515), (20, 1422012), (24, 1185010), (30, 948008), (40, 711006), (48, 592505), (60, 474004), (80, 355503), (120, 237002), (163, 174480), (240, 118501), (326, 87240), (489, 58160), (652, 43620), (727, 39120), (815, 34896), (978, 29080), (1304, 21810), (1454, 19560), (1630, 17448), (1956, 14540), (2181, 13040), (2445, 11632), (2608, 10905), (2908, 9780), (3260, 8724), (3635, 7824), (3912, 7270), (4362, 6520), (4890, 5816)]