20872680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{619}}^1$

素因数の和:914

約数の個数: 64

約数和(自身を含む): 62942400

約数和(自身を除く): 42069720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 281, 562, 619, 843, 1124, 1238, 1405, 1686, 1857, 2248, 2476, 2810, 3095, 3372, 3714, 4215, 4952, 5620, 6190, 6744, 7428, 8430, 9285, 11240, 12380, 14856, 16860, 18570, 24760, 33720, 37140, 74280, 173939, 347878, 521817, 695756, 869695, 1043634, 1391512, 1739390, 2087268, 2609085, 3478780, 4174536, 5218170, 6957560, 10436340, 20872680]

約数ペア:

[(1, 20872680), (2, 10436340), (3, 6957560), (4, 5218170), (5, 4174536), (6, 3478780), (8, 2609085), (10, 2087268), (12, 1739390), (15, 1391512), (20, 1043634), (24, 869695), (30, 695756), (40, 521817), (60, 347878), (120, 173939), (281, 74280), (562, 37140), (619, 33720), (843, 24760), (1124, 18570), (1238, 16860), (1405, 14856), (1686, 12380), (1857, 11240), (2248, 9285), (2476, 8430), (2810, 7428), (3095, 6744), (3372, 6190), (3714, 5620), (4215, 4952)]