20721036

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:223

約数の個数: 96

約数和(自身を含む): 58222080

約数和(自身を除く): 37501044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 59, 74, 84, 111, 113, 118, 148, 177, 222, 226, 236, 259, 339, 354, 413, 444, 452, 518, 678, 708, 777, 791, 826, 1036, 1239, 1356, 1554, 1582, 1652, 2183, 2373, 2478, 3108, 3164, 4181, 4366, 4746, 4956, 6549, 6667, 8362, 8732, 9492, 12543, 13098, 13334, 15281, 16724, 20001, 25086, 26196, 26668, 29267, 30562, 40002, 45843, 46669, 50172, 58534, 61124, 80004, 87801, 91686, 93338, 117068, 140007, 175602, 183372, 186676, 246679, 280014, 351204, 493358, 560028, 740037, 986716, 1480074, 1726753, 2960148, 3453506, 5180259, 6907012, 10360518, 20721036]

約数ペア:

[(1, 20721036), (2, 10360518), (3, 6907012), (4, 5180259), (6, 3453506), (7, 2960148), (12, 1726753), (14, 1480074), (21, 986716), (28, 740037), (37, 560028), (42, 493358), (59, 351204), (74, 280014), (84, 246679), (111, 186676), (113, 183372), (118, 175602), (148, 140007), (177, 117068), (222, 93338), (226, 91686), (236, 87801), (259, 80004), (339, 61124), (354, 58534), (413, 50172), (444, 46669), (452, 45843), (518, 40002), (678, 30562), (708, 29267), (777, 26668), (791, 26196), (826, 25086), (1036, 20001), (1239, 16724), (1356, 15281), (1554, 13334), (1582, 13098), (1652, 12543), (2183, 9492), (2373, 8732), (2478, 8362), (3108, 6667), (3164, 6549), (4181, 4956), (4366, 4746)]