20081140280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1613}}^1\times {\mathrm{16381}}^1$

素因数の和:18024

約数の個数: 64

約数和(自身を含む): 47592986400

約数和(自身を除く): 27511846120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 1613, 3226, 6452, 8065, 12904, 16130, 16381, 30647, 32260, 32762, 61294, 64520, 65524, 81905, 122588, 131048, 153235, 163810, 245176, 306470, 311239, 327620, 612940, 622478, 655240, 1225880, 1244956, 1556195, 2489912, 3112390, 6224780, 12449560, 26422553, 52845106, 105690212, 132112765, 211380424, 264225530, 502028507, 528451060, 1004057014, 1056902120, 2008114028, 2510142535, 4016228056, 5020285070, 10040570140, 20081140280]

約数ペア:

[(1, 20081140280), (2, 10040570140), (4, 5020285070), (5, 4016228056), (8, 2510142535), (10, 2008114028), (19, 1056902120), (20, 1004057014), (38, 528451060), (40, 502028507), (76, 264225530), (95, 211380424), (152, 132112765), (190, 105690212), (380, 52845106), (760, 26422553), (1613, 12449560), (3226, 6224780), (6452, 3112390), (8065, 2489912), (12904, 1556195), (16130, 1244956), (16381, 1225880), (30647, 655240), (32260, 622478), (32762, 612940), (61294, 327620), (64520, 311239), (65524, 306470), (81905, 245176), (122588, 163810), (131048, 153235)]