21113085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{557}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 40818816

約数和(自身を除く): 19705731

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 361, 399, 557, 665, 1083, 1671, 1805, 1995, 2527, 2785, 3899, 5415, 7581, 8355, 10583, 11697, 12635, 19495, 31749, 37905, 52915, 58485, 74081, 158745, 201077, 222243, 370405, 603231, 1005385, 1111215, 1407539, 3016155, 4222617, 7037695, 21113085]

約数ペア:

[(1, 21113085), (3, 7037695), (5, 4222617), (7, 3016155), (15, 1407539), (19, 1111215), (21, 1005385), (35, 603231), (57, 370405), (95, 222243), (105, 201077), (133, 158745), (285, 74081), (361, 58485), (399, 52915), (557, 37905), (665, 31749), (1083, 19495), (1671, 12635), (1805, 11697), (1995, 10583), (2527, 8355), (2785, 7581), (3899, 5415)]