20900430

素因数分解:

$2^1\times 3^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 112

約数和(自身を含む): 58549824

約数和(自身を除く): 37649394

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 47, 54, 61, 81, 90, 94, 122, 135, 141, 162, 183, 235, 243, 270, 282, 305, 366, 405, 423, 470, 486, 549, 610, 705, 729, 810, 846, 915, 1098, 1215, 1269, 1410, 1458, 1647, 1830, 2115, 2430, 2538, 2745, 2867, 3294, 3645, 3807, 4230, 4941, 5490, 5734, 6345, 7290, 7614, 8235, 8601, 9882, 11421, 12690, 14335, 14823, 16470, 17202, 19035, 22842, 24705, 25803, 28670, 29646, 34263, 38070, 43005, 44469, 49410, 51606, 57105, 68526, 74115, 77409, 86010, 88938, 114210, 129015, 148230, 154818, 171315, 222345, 232227, 258030, 342630, 387045, 444690, 464454, 696681, 774090, 1161135, 1393362, 2090043, 2322270, 3483405, 4180086, 6966810, 10450215, 20900430]

約数ペア:

[(1, 20900430), (2, 10450215), (3, 6966810), (5, 4180086), (6, 3483405), (9, 2322270), (10, 2090043), (15, 1393362), (18, 1161135), (27, 774090), (30, 696681), (45, 464454), (47, 444690), (54, 387045), (61, 342630), (81, 258030), (90, 232227), (94, 222345), (122, 171315), (135, 154818), (141, 148230), (162, 129015), (183, 114210), (235, 88938), (243, 86010), (270, 77409), (282, 74115), (305, 68526), (366, 57105), (405, 51606), (423, 49410), (470, 44469), (486, 43005), (549, 38070), (610, 34263), (705, 29646), (729, 28670), (810, 25803), (846, 24705), (915, 22842), (1098, 19035), (1215, 17202), (1269, 16470), (1410, 14823), (1458, 14335), (1647, 12690), (1830, 11421), (2115, 9882), (2430, 8601), (2538, 8235), (2745, 7614), (2867, 7290), (3294, 6345), (3645, 5734), (3807, 5490), (4230, 4941)]