20993028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:333

約数の個数: 96

約数和(自身を含む): 60496128

約数和(自身を除く): 39503100

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 61, 68, 84, 102, 119, 122, 183, 204, 238, 241, 244, 357, 366, 427, 476, 482, 714, 723, 732, 854, 964, 1037, 1281, 1428, 1446, 1687, 1708, 2074, 2562, 2892, 3111, 3374, 4097, 4148, 5061, 5124, 6222, 6748, 7259, 8194, 10122, 12291, 12444, 14518, 14701, 16388, 20244, 21777, 24582, 28679, 29036, 29402, 43554, 44103, 49164, 57358, 58804, 86037, 87108, 88206, 102907, 114716, 172074, 176412, 205814, 249917, 308721, 344148, 411628, 499834, 617442, 749751, 999668, 1234884, 1499502, 1749419, 2999004, 3498838, 5248257, 6997676, 10496514, 20993028]

約数ペア:

[(1, 20993028), (2, 10496514), (3, 6997676), (4, 5248257), (6, 3498838), (7, 2999004), (12, 1749419), (14, 1499502), (17, 1234884), (21, 999668), (28, 749751), (34, 617442), (42, 499834), (51, 411628), (61, 344148), (68, 308721), (84, 249917), (102, 205814), (119, 176412), (122, 172074), (183, 114716), (204, 102907), (238, 88206), (241, 87108), (244, 86037), (357, 58804), (366, 57358), (427, 49164), (476, 44103), (482, 43554), (714, 29402), (723, 29036), (732, 28679), (854, 24582), (964, 21777), (1037, 20244), (1281, 16388), (1428, 14701), (1446, 14518), (1687, 12444), (1708, 12291), (2074, 10122), (2562, 8194), (2892, 7259), (3111, 6748), (3374, 6222), (4097, 5124), (4148, 5061)]