28475590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19913}}^1$

素因数の和:19944

約数の個数: 32

約数和(自身を含む): 60219936

約数和(自身を除く): 31744346

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 19913, 39826, 99565, 199130, 219043, 258869, 438086, 517738, 1095215, 1294345, 2190430, 2588690, 2847559, 5695118, 14237795, 28475590]

約数ペア:

[(1, 28475590), (2, 14237795), (5, 5695118), (10, 2847559), (11, 2588690), (13, 2190430), (22, 1294345), (26, 1095215), (55, 517738), (65, 438086), (110, 258869), (130, 219043), (143, 199130), (286, 99565), (715, 39826), (1430, 19913)]