21961212

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1$

素因数の和:77

約数の個数: 144

約数和(自身を含む): 68372640

約数和(自身を除く): 46411428

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 21, 26, 28, 34, 39, 42, 49, 51, 52, 68, 78, 84, 91, 98, 102, 119, 147, 156, 169, 182, 196, 204, 221, 238, 273, 294, 338, 357, 364, 442, 476, 507, 546, 588, 637, 663, 676, 714, 833, 884, 1014, 1092, 1183, 1274, 1326, 1428, 1547, 1666, 1911, 2028, 2197, 2366, 2499, 2548, 2652, 2873, 3094, 3332, 3549, 3822, 4394, 4641, 4732, 4998, 5746, 6188, 6591, 7098, 7644, 8281, 8619, 8788, 9282, 9996, 10829, 11492, 13182, 14196, 15379, 16562, 17238, 18564, 20111, 21658, 24843, 26364, 30758, 32487, 33124, 34476, 37349, 40222, 43316, 46137, 49686, 60333, 61516, 64974, 74698, 80444, 92274, 99372, 107653, 112047, 120666, 129948, 140777, 149396, 184548, 215306, 224094, 241332, 261443, 281554, 322959, 422331, 430612, 448188, 522886, 563108, 645918, 784329, 844662, 1045772, 1291836, 1568658, 1689324, 1830101, 3137316, 3660202, 5490303, 7320404, 10980606, 21961212]

約数ペア:

[(1, 21961212), (2, 10980606), (3, 7320404), (4, 5490303), (6, 3660202), (7, 3137316), (12, 1830101), (13, 1689324), (14, 1568658), (17, 1291836), (21, 1045772), (26, 844662), (28, 784329), (34, 645918), (39, 563108), (42, 522886), (49, 448188), (51, 430612), (52, 422331), (68, 322959), (78, 281554), (84, 261443), (91, 241332), (98, 224094), (102, 215306), (119, 184548), (147, 149396), (156, 140777), (169, 129948), (182, 120666), (196, 112047), (204, 107653), (221, 99372), (238, 92274), (273, 80444), (294, 74698), (338, 64974), (357, 61516), (364, 60333), (442, 49686), (476, 46137), (507, 43316), (546, 40222), (588, 37349), (637, 34476), (663, 33124), (676, 32487), (714, 30758), (833, 26364), (884, 24843), (1014, 21658), (1092, 20111), (1183, 18564), (1274, 17238), (1326, 16562), (1428, 15379), (1547, 14196), (1666, 13182), (1911, 11492), (2028, 10829), (2197, 9996), (2366, 9282), (2499, 8788), (2548, 8619), (2652, 8281), (2873, 7644), (3094, 7098), (3332, 6591), (3549, 6188), (3822, 5746), (4394, 4998), (4641, 4732)]