21728880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:415

約数の個数: 120

約数和(自身を含む): 73932768

約数和(自身を除く): 52203888

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 103, 120, 144, 180, 206, 240, 293, 309, 360, 412, 515, 586, 618, 720, 824, 879, 927, 1030, 1172, 1236, 1465, 1545, 1648, 1758, 1854, 2060, 2344, 2472, 2637, 2930, 3090, 3516, 3708, 4120, 4395, 4635, 4688, 4944, 5274, 5860, 6180, 7032, 7416, 8240, 8790, 9270, 10548, 11720, 12360, 13185, 14064, 14832, 17580, 18540, 21096, 23440, 24720, 26370, 30179, 35160, 37080, 42192, 52740, 60358, 70320, 74160, 90537, 105480, 120716, 150895, 181074, 210960, 241432, 271611, 301790, 362148, 452685, 482864, 543222, 603580, 724296, 905370, 1086444, 1207160, 1358055, 1448592, 1810740, 2172888, 2414320, 2716110, 3621480, 4345776, 5432220, 7242960, 10864440, 21728880]

約数ペア:

[(1, 21728880), (2, 10864440), (3, 7242960), (4, 5432220), (5, 4345776), (6, 3621480), (8, 2716110), (9, 2414320), (10, 2172888), (12, 1810740), (15, 1448592), (16, 1358055), (18, 1207160), (20, 1086444), (24, 905370), (30, 724296), (36, 603580), (40, 543222), (45, 482864), (48, 452685), (60, 362148), (72, 301790), (80, 271611), (90, 241432), (103, 210960), (120, 181074), (144, 150895), (180, 120716), (206, 105480), (240, 90537), (293, 74160), (309, 70320), (360, 60358), (412, 52740), (515, 42192), (586, 37080), (618, 35160), (720, 30179), (824, 26370), (879, 24720), (927, 23440), (1030, 21096), (1172, 18540), (1236, 17580), (1465, 14832), (1545, 14064), (1648, 13185), (1758, 12360), (1854, 11720), (2060, 10548), (2344, 9270), (2472, 8790), (2637, 8240), (2930, 7416), (3090, 7032), (3516, 6180), (3708, 5860), (4120, 5274), (4395, 4944), (4635, 4688)]