18934825

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:107

約数の個数: 72

約数和(自身を含む): 31169880

約数和(自身を除く): 12235055

約数列:

[1, 5, 7, 13, 25, 29, 35, 41, 49, 65, 91, 145, 175, 203, 205, 245, 287, 325, 377, 455, 533, 637, 725, 1015, 1025, 1189, 1225, 1421, 1435, 1885, 2009, 2275, 2639, 2665, 3185, 3731, 5075, 5945, 7105, 7175, 8323, 9425, 10045, 13195, 13325, 15457, 15925, 18473, 18655, 26117, 29725, 35525, 41615, 50225, 58261, 65975, 77285, 92365, 93275, 108199, 130585, 208075, 291305, 386425, 461825, 540995, 652925, 757393, 1456525, 2704975, 3786965, 18934825]

約数ペア:

[(1, 18934825), (5, 3786965), (7, 2704975), (13, 1456525), (25, 757393), (29, 652925), (35, 540995), (41, 461825), (49, 386425), (65, 291305), (91, 208075), (145, 130585), (175, 108199), (203, 93275), (205, 92365), (245, 77285), (287, 65975), (325, 58261), (377, 50225), (455, 41615), (533, 35525), (637, 29725), (725, 26117), (1015, 18655), (1025, 18473), (1189, 15925), (1225, 15457), (1421, 13325), (1435, 13195), (1885, 10045), (2009, 9425), (2275, 8323), (2639, 7175), (2665, 7105), (3185, 5945), (3731, 5075)]