21430575

素因数分解:

$3^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{557}}^1$

素因数の和:598

約数の個数: 60

約数和(自身を含む): 41861160

約数和(自身を除く): 20430585

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 135, 171, 225, 285, 405, 475, 513, 557, 675, 855, 1425, 1539, 1671, 2025, 2565, 2785, 4275, 5013, 7695, 8355, 10583, 12825, 13925, 15039, 25065, 31749, 38475, 41775, 45117, 52915, 75195, 95247, 125325, 158745, 225585, 264575, 285741, 375975, 476235, 793725, 857223, 1127925, 1428705, 2381175, 4286115, 7143525, 21430575]

約数ペア:

[(1, 21430575), (3, 7143525), (5, 4286115), (9, 2381175), (15, 1428705), (19, 1127925), (25, 857223), (27, 793725), (45, 476235), (57, 375975), (75, 285741), (81, 264575), (95, 225585), (135, 158745), (171, 125325), (225, 95247), (285, 75195), (405, 52915), (475, 45117), (513, 41775), (557, 38475), (675, 31749), (855, 25065), (1425, 15039), (1539, 13925), (1671, 12825), (2025, 10583), (2565, 8355), (2785, 7695), (4275, 5013)]