31721220

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:192

約数の個数: 144

約数和(自身を含む): 102368448

約数和(自身を除く): 70647228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 81, 90, 107, 108, 122, 135, 162, 180, 183, 214, 243, 244, 270, 305, 321, 324, 366, 405, 428, 486, 535, 540, 549, 610, 642, 732, 810, 915, 963, 972, 1070, 1098, 1215, 1220, 1284, 1605, 1620, 1647, 1830, 1926, 2140, 2196, 2430, 2745, 2889, 3210, 3294, 3660, 3852, 4815, 4860, 4941, 5490, 5778, 6420, 6527, 6588, 8235, 8667, 9630, 9882, 10980, 11556, 13054, 14445, 14823, 16470, 17334, 19260, 19581, 19764, 24705, 26001, 26108, 28890, 29646, 32635, 32940, 34668, 39162, 43335, 49410, 52002, 57780, 58743, 59292, 65270, 74115, 78324, 86670, 97905, 98820, 104004, 117486, 130005, 130540, 148230, 173340, 176229, 195810, 234972, 260010, 293715, 296460, 352458, 391620, 520020, 528687, 587430, 704916, 881145, 1057374, 1174860, 1586061, 1762290, 2114748, 2643435, 3172122, 3524580, 5286870, 6344244, 7930305, 10573740, 15860610, 31721220]

約数ペア:

[(1, 31721220), (2, 15860610), (3, 10573740), (4, 7930305), (5, 6344244), (6, 5286870), (9, 3524580), (10, 3172122), (12, 2643435), (15, 2114748), (18, 1762290), (20, 1586061), (27, 1174860), (30, 1057374), (36, 881145), (45, 704916), (54, 587430), (60, 528687), (61, 520020), (81, 391620), (90, 352458), (107, 296460), (108, 293715), (122, 260010), (135, 234972), (162, 195810), (180, 176229), (183, 173340), (214, 148230), (243, 130540), (244, 130005), (270, 117486), (305, 104004), (321, 98820), (324, 97905), (366, 86670), (405, 78324), (428, 74115), (486, 65270), (535, 59292), (540, 58743), (549, 57780), (610, 52002), (642, 49410), (732, 43335), (810, 39162), (915, 34668), (963, 32940), (972, 32635), (1070, 29646), (1098, 28890), (1215, 26108), (1220, 26001), (1284, 24705), (1605, 19764), (1620, 19581), (1647, 19260), (1830, 17334), (1926, 16470), (2140, 14823), (2196, 14445), (2430, 13054), (2745, 11556), (2889, 10980), (3210, 9882), (3294, 9630), (3660, 8667), (3852, 8235), (4815, 6588), (4860, 6527), (4941, 6420), (5490, 5778)]