21565245

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 38368512

約数和(自身を除く): 16803267

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 169, 181, 195, 235, 507, 543, 611, 705, 845, 905, 1833, 2353, 2535, 2715, 3055, 7059, 7943, 8507, 9165, 11765, 23829, 25521, 30589, 35295, 39715, 42535, 91767, 110591, 119145, 127605, 152945, 331773, 458835, 552955, 1437683, 1658865, 4313049, 7188415, 21565245]

約数ペア:

[(1, 21565245), (3, 7188415), (5, 4313049), (13, 1658865), (15, 1437683), (39, 552955), (47, 458835), (65, 331773), (141, 152945), (169, 127605), (181, 119145), (195, 110591), (235, 91767), (507, 42535), (543, 39715), (611, 35295), (705, 30589), (845, 25521), (905, 23829), (1833, 11765), (2353, 9165), (2535, 8507), (2715, 7943), (3055, 7059)]