20482980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6967}}^1$

素因数の和:6993

約数の個数: 72

約数和(自身を含む): 66725568

約数和(自身を除く): 46242588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6967, 13934, 20901, 27868, 34835, 41802, 48769, 69670, 83604, 97538, 104505, 139340, 146307, 195076, 209010, 243845, 292614, 341383, 418020, 487690, 585228, 682766, 731535, 975380, 1024149, 1365532, 1463070, 1706915, 2048298, 2926140, 3413830, 4096596, 5120745, 6827660, 10241490, 20482980]

約数ペア:

[(1, 20482980), (2, 10241490), (3, 6827660), (4, 5120745), (5, 4096596), (6, 3413830), (7, 2926140), (10, 2048298), (12, 1706915), (14, 1463070), (15, 1365532), (20, 1024149), (21, 975380), (28, 731535), (30, 682766), (35, 585228), (42, 487690), (49, 418020), (60, 341383), (70, 292614), (84, 243845), (98, 209010), (105, 195076), (140, 146307), (147, 139340), (196, 104505), (210, 97538), (245, 83604), (294, 69670), (420, 48769), (490, 41802), (588, 34835), (735, 27868), (980, 20901), (1470, 13934), (2940, 6967)]