19898450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:81

約数の個数: 96

約数和(自身を含む): 45747072

約数和(自身を除く): 25848622

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 25, 26, 46, 50, 55, 65, 110, 115, 121, 130, 143, 230, 242, 253, 275, 286, 299, 325, 506, 550, 575, 598, 605, 650, 715, 1150, 1210, 1265, 1331, 1430, 1495, 1573, 2530, 2662, 2783, 2990, 3025, 3146, 3289, 3575, 5566, 6050, 6325, 6578, 6655, 7150, 7475, 7865, 12650, 13310, 13915, 14950, 15730, 16445, 17303, 27830, 30613, 32890, 33275, 34606, 36179, 39325, 61226, 66550, 69575, 72358, 78650, 82225, 86515, 139150, 153065, 164450, 173030, 180895, 306130, 361790, 397969, 432575, 765325, 795938, 865150, 904475, 1530650, 1808950, 1989845, 3979690, 9949225, 19898450]

約数ペア:

[(1, 19898450), (2, 9949225), (5, 3979690), (10, 1989845), (11, 1808950), (13, 1530650), (22, 904475), (23, 865150), (25, 795938), (26, 765325), (46, 432575), (50, 397969), (55, 361790), (65, 306130), (110, 180895), (115, 173030), (121, 164450), (130, 153065), (143, 139150), (230, 86515), (242, 82225), (253, 78650), (275, 72358), (286, 69575), (299, 66550), (325, 61226), (506, 39325), (550, 36179), (575, 34606), (598, 33275), (605, 32890), (650, 30613), (715, 27830), (1150, 17303), (1210, 16445), (1265, 15730), (1331, 14950), (1430, 13915), (1495, 13310), (1573, 12650), (2530, 7865), (2662, 7475), (2783, 7150), (2990, 6655), (3025, 6578), (3146, 6325), (3289, 6050), (3575, 5566)]