21630420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17167}}^1$

素因数の和:17189

約数の個数: 72

約数和(自身を含む): 74989824

約数和(自身を除く): 53359404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17167, 34334, 51501, 68668, 85835, 103002, 120169, 154503, 171670, 206004, 240338, 257505, 309006, 343340, 360507, 480676, 515010, 600845, 618012, 721014, 772515, 1030020, 1081521, 1201690, 1442028, 1545030, 1802535, 2163042, 2403380, 3090060, 3605070, 4326084, 5407605, 7210140, 10815210, 21630420]

約数ペア:

[(1, 21630420), (2, 10815210), (3, 7210140), (4, 5407605), (5, 4326084), (6, 3605070), (7, 3090060), (9, 2403380), (10, 2163042), (12, 1802535), (14, 1545030), (15, 1442028), (18, 1201690), (20, 1081521), (21, 1030020), (28, 772515), (30, 721014), (35, 618012), (36, 600845), (42, 515010), (45, 480676), (60, 360507), (63, 343340), (70, 309006), (84, 257505), (90, 240338), (105, 206004), (126, 171670), (140, 154503), (180, 120169), (210, 103002), (252, 85835), (315, 68668), (420, 51501), (630, 34334), (1260, 17167)]