21731220

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5749}}^1$

素因数の和:5774

約数の個数: 96

約数和(自身を含む): 77280000

約数和(自身を除く): 55548780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5749, 11498, 17247, 22996, 28745, 34494, 40243, 51741, 57490, 68988, 80486, 86235, 103482, 114980, 120729, 155223, 160972, 172470, 201215, 206964, 241458, 258705, 310446, 344940, 362187, 402430, 482916, 517410, 603645, 620892, 724374, 776115, 804860, 1034820, 1086561, 1207290, 1448748, 1552230, 1810935, 2173122, 2414580, 3104460, 3621870, 4346244, 5432805, 7243740, 10865610, 21731220]

約数ペア:

[(1, 21731220), (2, 10865610), (3, 7243740), (4, 5432805), (5, 4346244), (6, 3621870), (7, 3104460), (9, 2414580), (10, 2173122), (12, 1810935), (14, 1552230), (15, 1448748), (18, 1207290), (20, 1086561), (21, 1034820), (27, 804860), (28, 776115), (30, 724374), (35, 620892), (36, 603645), (42, 517410), (45, 482916), (54, 402430), (60, 362187), (63, 344940), (70, 310446), (84, 258705), (90, 241458), (105, 206964), (108, 201215), (126, 172470), (135, 160972), (140, 155223), (180, 120729), (189, 114980), (210, 103482), (252, 86235), (270, 80486), (315, 68988), (378, 57490), (420, 51741), (540, 40243), (630, 34494), (756, 28745), (945, 22996), (1260, 17247), (1890, 11498), (3780, 5749)]