221720520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{263953}}^1$

素因数の和:263974

約数の個数: 64

約数和(自身を含む): 760187520

約数和(自身を除く): 538467000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 263953, 527906, 791859, 1055812, 1319765, 1583718, 1847671, 2111624, 2639530, 3167436, 3695342, 3959295, 5279060, 5543013, 6334872, 7390684, 7918590, 9238355, 10558120, 11086026, 14781368, 15837180, 18476710, 22172052, 27715065, 31674360, 36953420, 44344104, 55430130, 73906840, 110860260, 221720520]

約数ペア:

[(1, 221720520), (2, 110860260), (3, 73906840), (4, 55430130), (5, 44344104), (6, 36953420), (7, 31674360), (8, 27715065), (10, 22172052), (12, 18476710), (14, 15837180), (15, 14781368), (20, 11086026), (21, 10558120), (24, 9238355), (28, 7918590), (30, 7390684), (35, 6334872), (40, 5543013), (42, 5279060), (56, 3959295), (60, 3695342), (70, 3167436), (84, 2639530), (105, 2111624), (120, 1847671), (140, 1583718), (168, 1319765), (210, 1055812), (280, 791859), (420, 527906), (840, 263953)]