20832720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1423}}^1$

素因数の和:1500

約数の個数: 80

約数和(自身を含む): 65686272

約数和(自身を除く): 44853552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1423, 1464, 1830, 2440, 2846, 2928, 3660, 4269, 4880, 5692, 7115, 7320, 8538, 11384, 14230, 14640, 17076, 21345, 22768, 28460, 34152, 42690, 56920, 68304, 85380, 86803, 113840, 170760, 173606, 260409, 341520, 347212, 434015, 520818, 694424, 868030, 1041636, 1302045, 1388848, 1736060, 2083272, 2604090, 3472120, 4166544, 5208180, 6944240, 10416360, 20832720]

約数ペア:

[(1, 20832720), (2, 10416360), (3, 6944240), (4, 5208180), (5, 4166544), (6, 3472120), (8, 2604090), (10, 2083272), (12, 1736060), (15, 1388848), (16, 1302045), (20, 1041636), (24, 868030), (30, 694424), (40, 520818), (48, 434015), (60, 347212), (61, 341520), (80, 260409), (120, 173606), (122, 170760), (183, 113840), (240, 86803), (244, 85380), (305, 68304), (366, 56920), (488, 42690), (610, 34152), (732, 28460), (915, 22768), (976, 21345), (1220, 17076), (1423, 14640), (1464, 14230), (1830, 11384), (2440, 8538), (2846, 7320), (2928, 7115), (3660, 5692), (4269, 4880)]