21687480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{467}}^1$

素因数の和:530

約数の個数: 128

約数和(自身を含む): 74131200

約数和(自身を除く): 52443720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 43, 45, 54, 60, 72, 86, 90, 108, 120, 129, 135, 172, 180, 215, 216, 258, 270, 344, 360, 387, 430, 467, 516, 540, 645, 774, 860, 934, 1032, 1080, 1161, 1290, 1401, 1548, 1720, 1868, 1935, 2322, 2335, 2580, 2802, 3096, 3736, 3870, 4203, 4644, 4670, 5160, 5604, 5805, 7005, 7740, 8406, 9288, 9340, 11208, 11610, 12609, 14010, 15480, 16812, 18680, 20081, 21015, 23220, 25218, 28020, 33624, 40162, 42030, 46440, 50436, 56040, 60243, 63045, 80324, 84060, 100405, 100872, 120486, 126090, 160648, 168120, 180729, 200810, 240972, 252180, 301215, 361458, 401620, 481944, 504360, 542187, 602430, 722916, 803240, 903645, 1084374, 1204860, 1445832, 1807290, 2168748, 2409720, 2710935, 3614580, 4337496, 5421870, 7229160, 10843740, 21687480]

約数ペア:

[(1, 21687480), (2, 10843740), (3, 7229160), (4, 5421870), (5, 4337496), (6, 3614580), (8, 2710935), (9, 2409720), (10, 2168748), (12, 1807290), (15, 1445832), (18, 1204860), (20, 1084374), (24, 903645), (27, 803240), (30, 722916), (36, 602430), (40, 542187), (43, 504360), (45, 481944), (54, 401620), (60, 361458), (72, 301215), (86, 252180), (90, 240972), (108, 200810), (120, 180729), (129, 168120), (135, 160648), (172, 126090), (180, 120486), (215, 100872), (216, 100405), (258, 84060), (270, 80324), (344, 63045), (360, 60243), (387, 56040), (430, 50436), (467, 46440), (516, 42030), (540, 40162), (645, 33624), (774, 28020), (860, 25218), (934, 23220), (1032, 21015), (1080, 20081), (1161, 18680), (1290, 16812), (1401, 15480), (1548, 14010), (1720, 12609), (1868, 11610), (1935, 11208), (2322, 9340), (2335, 9288), (2580, 8406), (2802, 7740), (3096, 7005), (3736, 5805), (3870, 5604), (4203, 5160), (4644, 4670)]