21185430

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1277}}^1$

素因数の和:1373

約数の個数: 64

約数和(自身を含む): 58890240

約数和(自身を除く): 37704810

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 79, 105, 158, 210, 237, 395, 474, 553, 790, 1106, 1185, 1277, 1659, 2370, 2554, 2765, 3318, 3831, 5530, 6385, 7662, 8295, 8939, 12770, 16590, 17878, 19155, 26817, 38310, 44695, 53634, 89390, 100883, 134085, 201766, 268170, 302649, 504415, 605298, 706181, 1008830, 1412362, 1513245, 2118543, 3026490, 3530905, 4237086, 7061810, 10592715, 21185430]

約数ペア:

[(1, 21185430), (2, 10592715), (3, 7061810), (5, 4237086), (6, 3530905), (7, 3026490), (10, 2118543), (14, 1513245), (15, 1412362), (21, 1008830), (30, 706181), (35, 605298), (42, 504415), (70, 302649), (79, 268170), (105, 201766), (158, 134085), (210, 100883), (237, 89390), (395, 53634), (474, 44695), (553, 38310), (790, 26817), (1106, 19155), (1185, 17878), (1277, 16590), (1659, 12770), (2370, 8939), (2554, 8295), (2765, 7662), (3318, 6385), (3831, 5530)]