21308640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:552

約数の個数: 96

約数和(自身を含む): 67931136

約数和(自身を除く): 46622496

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 103, 120, 160, 206, 240, 309, 412, 431, 480, 515, 618, 824, 862, 1030, 1236, 1293, 1545, 1648, 1724, 2060, 2155, 2472, 2586, 3090, 3296, 3448, 4120, 4310, 4944, 5172, 6180, 6465, 6896, 8240, 8620, 9888, 10344, 12360, 12930, 13792, 16480, 17240, 20688, 24720, 25860, 34480, 41376, 44393, 49440, 51720, 68960, 88786, 103440, 133179, 177572, 206880, 221965, 266358, 355144, 443930, 532716, 665895, 710288, 887860, 1065432, 1331790, 1420576, 1775720, 2130864, 2663580, 3551440, 4261728, 5327160, 7102880, 10654320, 21308640]

約数ペア:

[(1, 21308640), (2, 10654320), (3, 7102880), (4, 5327160), (5, 4261728), (6, 3551440), (8, 2663580), (10, 2130864), (12, 1775720), (15, 1420576), (16, 1331790), (20, 1065432), (24, 887860), (30, 710288), (32, 665895), (40, 532716), (48, 443930), (60, 355144), (80, 266358), (96, 221965), (103, 206880), (120, 177572), (160, 133179), (206, 103440), (240, 88786), (309, 68960), (412, 51720), (431, 49440), (480, 44393), (515, 41376), (618, 34480), (824, 25860), (862, 24720), (1030, 20688), (1236, 17240), (1293, 16480), (1545, 13792), (1648, 12930), (1724, 12360), (2060, 10344), (2155, 9888), (2472, 8620), (2586, 8240), (3090, 6896), (3296, 6465), (3448, 6180), (4120, 5172), (4310, 4944)]