21663720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1543}}^1$

素因数の和:1576

約数の個数: 128

約数和(自身を含む): 77817600

約数和(自身を除く): 56153880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1543, 1560, 1755, 2340, 2808, 3086, 3510, 4629, 4680, 6172, 7020, 7715, 9258, 12344, 13887, 14040, 15430, 18516, 20059, 23145, 27774, 30860, 37032, 40118, 41661, 46290, 55548, 60177, 61720, 69435, 80236, 83322, 92580, 100295, 111096, 120354, 138870, 160472, 166644, 180531, 185160, 200590, 208305, 240708, 277740, 300885, 333288, 361062, 401180, 416610, 481416, 541593, 555480, 601770, 722124, 802360, 833220, 902655, 1083186, 1203540, 1444248, 1666440, 1805310, 2166372, 2407080, 2707965, 3610620, 4332744, 5415930, 7221240, 10831860, 21663720]

約数ペア:

[(1, 21663720), (2, 10831860), (3, 7221240), (4, 5415930), (5, 4332744), (6, 3610620), (8, 2707965), (9, 2407080), (10, 2166372), (12, 1805310), (13, 1666440), (15, 1444248), (18, 1203540), (20, 1083186), (24, 902655), (26, 833220), (27, 802360), (30, 722124), (36, 601770), (39, 555480), (40, 541593), (45, 481416), (52, 416610), (54, 401180), (60, 361062), (65, 333288), (72, 300885), (78, 277740), (90, 240708), (104, 208305), (108, 200590), (117, 185160), (120, 180531), (130, 166644), (135, 160472), (156, 138870), (180, 120354), (195, 111096), (216, 100295), (234, 92580), (260, 83322), (270, 80236), (312, 69435), (351, 61720), (360, 60177), (390, 55548), (468, 46290), (520, 41661), (540, 40118), (585, 37032), (702, 30860), (780, 27774), (936, 23145), (1080, 20059), (1170, 18516), (1404, 15430), (1543, 14040), (1560, 13887), (1755, 12344), (2340, 9258), (2808, 7715), (3086, 7020), (3510, 6172), (4629, 4680)]