21387996

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1489}}^1$

素因数の和:1528

約数の個数: 96

約数和(自身を含む): 66752000

約数和(自身を除く): 45364004

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 27, 28, 36, 38, 42, 54, 57, 63, 76, 84, 108, 114, 126, 133, 171, 189, 228, 252, 266, 342, 378, 399, 513, 532, 684, 756, 798, 1026, 1197, 1489, 1596, 2052, 2394, 2978, 3591, 4467, 4788, 5956, 7182, 8934, 10423, 13401, 14364, 17868, 20846, 26802, 28291, 31269, 40203, 41692, 53604, 56582, 62538, 80406, 84873, 93807, 113164, 125076, 160812, 169746, 187614, 198037, 254619, 281421, 339492, 375228, 396074, 509238, 562842, 594111, 763857, 792148, 1018476, 1125684, 1188222, 1527714, 1782333, 2376444, 3055428, 3564666, 5346999, 7129332, 10693998, 21387996]

約数ペア:

[(1, 21387996), (2, 10693998), (3, 7129332), (4, 5346999), (6, 3564666), (7, 3055428), (9, 2376444), (12, 1782333), (14, 1527714), (18, 1188222), (19, 1125684), (21, 1018476), (27, 792148), (28, 763857), (36, 594111), (38, 562842), (42, 509238), (54, 396074), (57, 375228), (63, 339492), (76, 281421), (84, 254619), (108, 198037), (114, 187614), (126, 169746), (133, 160812), (171, 125076), (189, 113164), (228, 93807), (252, 84873), (266, 80406), (342, 62538), (378, 56582), (399, 53604), (513, 41692), (532, 40203), (684, 31269), (756, 28291), (798, 26802), (1026, 20846), (1197, 17868), (1489, 14364), (1596, 13401), (2052, 10423), (2394, 8934), (2978, 7182), (3591, 5956), (4467, 4788)]