21117553160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1297147}}^1$

素因数の和:1297206

約数の個数: 64

約数和(自身を含む): 53234953920

約数和(自身を除く): 32117400760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1480, 1628, 2035, 3256, 4070, 8140, 16280, 1297147, 2594294, 5188588, 6485735, 10377176, 12971470, 14268617, 25942940, 28537234, 47994439, 51885880, 57074468, 71343085, 95988878, 114148936, 142686170, 191977756, 239972195, 285372340, 383955512, 479944390, 527938829, 570744680, 959888780, 1055877658, 1919777560, 2111755316, 2639694145, 4223510632, 5279388290, 10558776580, 21117553160]

約数ペア:

[(1, 21117553160), (2, 10558776580), (4, 5279388290), (5, 4223510632), (8, 2639694145), (10, 2111755316), (11, 1919777560), (20, 1055877658), (22, 959888780), (37, 570744680), (40, 527938829), (44, 479944390), (55, 383955512), (74, 285372340), (88, 239972195), (110, 191977756), (148, 142686170), (185, 114148936), (220, 95988878), (296, 71343085), (370, 57074468), (407, 51885880), (440, 47994439), (740, 28537234), (814, 25942940), (1480, 14268617), (1628, 12971470), (2035, 10377176), (3256, 6485735), (4070, 5188588), (8140, 2594294), (16280, 1297147)]