20155300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 48559392

約数和(自身を除く): 28404092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 73, 100, 110, 146, 220, 251, 275, 292, 365, 502, 550, 730, 803, 1004, 1100, 1255, 1460, 1606, 1825, 2510, 2761, 3212, 3650, 4015, 5020, 5522, 6275, 7300, 8030, 11044, 12550, 13805, 16060, 18323, 20075, 25100, 27610, 36646, 40150, 55220, 69025, 73292, 80300, 91615, 138050, 183230, 201553, 276100, 366460, 403106, 458075, 806212, 916150, 1007765, 1832300, 2015530, 4031060, 5038825, 10077650, 20155300]

約数ペア:

[(1, 20155300), (2, 10077650), (4, 5038825), (5, 4031060), (10, 2015530), (11, 1832300), (20, 1007765), (22, 916150), (25, 806212), (44, 458075), (50, 403106), (55, 366460), (73, 276100), (100, 201553), (110, 183230), (146, 138050), (220, 91615), (251, 80300), (275, 73292), (292, 69025), (365, 55220), (502, 40150), (550, 36646), (730, 27610), (803, 25100), (1004, 20075), (1100, 18323), (1255, 16060), (1460, 13805), (1606, 12550), (1825, 11044), (2510, 8030), (2761, 7300), (3212, 6275), (3650, 5522), (4015, 5020)]