21958908

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 55942992

約数和(自身を除く): 33984084

約数列:

[1, 2, 3, 4, 6, 12, 19, 37, 38, 57, 74, 76, 111, 114, 137, 148, 222, 228, 274, 361, 411, 444, 548, 703, 722, 822, 1083, 1406, 1444, 1644, 2109, 2166, 2603, 2812, 4218, 4332, 5069, 5206, 7809, 8436, 10138, 10412, 13357, 15207, 15618, 20276, 26714, 30414, 31236, 40071, 49457, 53428, 60828, 80142, 96311, 98914, 148371, 160284, 192622, 197828, 288933, 296742, 385244, 577866, 593484, 1155732, 1829909, 3659818, 5489727, 7319636, 10979454, 21958908]

約数ペア:

[(1, 21958908), (2, 10979454), (3, 7319636), (4, 5489727), (6, 3659818), (12, 1829909), (19, 1155732), (37, 593484), (38, 577866), (57, 385244), (74, 296742), (76, 288933), (111, 197828), (114, 192622), (137, 160284), (148, 148371), (222, 98914), (228, 96311), (274, 80142), (361, 60828), (411, 53428), (444, 49457), (548, 40071), (703, 31236), (722, 30414), (822, 26714), (1083, 20276), (1406, 15618), (1444, 15207), (1644, 13357), (2109, 10412), (2166, 10138), (2603, 8436), (2812, 7809), (4218, 5206), (4332, 5069)]