18907460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:645

約数の個数: 72

約数和(自身を含む): 47078808

約数和(自身を除く): 28171348

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 601, 605, 715, 1202, 1210, 1430, 1573, 2404, 2420, 2860, 3005, 3146, 6010, 6292, 6611, 7813, 7865, 12020, 13222, 15626, 15730, 26444, 31252, 31460, 33055, 39065, 66110, 72721, 78130, 85943, 132220, 145442, 156260, 171886, 290884, 343772, 363605, 429715, 727210, 859430, 945373, 1454420, 1718860, 1890746, 3781492, 4726865, 9453730, 18907460]

約数ペア:

[(1, 18907460), (2, 9453730), (4, 4726865), (5, 3781492), (10, 1890746), (11, 1718860), (13, 1454420), (20, 945373), (22, 859430), (26, 727210), (44, 429715), (52, 363605), (55, 343772), (65, 290884), (110, 171886), (121, 156260), (130, 145442), (143, 132220), (220, 85943), (242, 78130), (260, 72721), (286, 66110), (484, 39065), (572, 33055), (601, 31460), (605, 31252), (715, 26444), (1202, 15730), (1210, 15626), (1430, 13222), (1573, 12020), (2404, 7865), (2420, 7813), (2860, 6611), (3005, 6292), (3146, 6010)]