20721924

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 55106688

約数和(自身を除く): 34384764

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 47, 74, 94, 111, 141, 148, 188, 222, 282, 331, 333, 423, 444, 564, 662, 666, 846, 993, 1324, 1332, 1692, 1739, 1986, 2979, 3478, 3972, 5217, 5958, 6956, 10434, 11916, 12247, 15557, 15651, 20868, 24494, 31114, 31302, 36741, 46671, 48988, 62228, 62604, 73482, 93342, 110223, 140013, 146964, 186684, 220446, 280026, 440892, 560052, 575609, 1151218, 1726827, 2302436, 3453654, 5180481, 6907308, 10360962, 20721924]

約数ペア:

[(1, 20721924), (2, 10360962), (3, 6907308), (4, 5180481), (6, 3453654), (9, 2302436), (12, 1726827), (18, 1151218), (36, 575609), (37, 560052), (47, 440892), (74, 280026), (94, 220446), (111, 186684), (141, 146964), (148, 140013), (188, 110223), (222, 93342), (282, 73482), (331, 62604), (333, 62228), (423, 48988), (444, 46671), (564, 36741), (662, 31302), (666, 31114), (846, 24494), (993, 20868), (1324, 15651), (1332, 15557), (1692, 12247), (1739, 11916), (1986, 10434), (2979, 6956), (3478, 5958), (3972, 5217)]