20870820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2467}}^1$

素因数の和:2529

約数の個数: 72

約数和(自身を含む): 64681344

約数和(自身を除く): 43810524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2467, 2820, 4230, 4934, 7401, 8460, 9868, 12335, 14802, 22203, 24670, 29604, 37005, 44406, 49340, 74010, 88812, 111015, 115949, 148020, 222030, 231898, 347847, 444060, 463796, 579745, 695694, 1043541, 1159490, 1391388, 1739235, 2087082, 2318980, 3478470, 4174164, 5217705, 6956940, 10435410, 20870820]

約数ペア:

[(1, 20870820), (2, 10435410), (3, 6956940), (4, 5217705), (5, 4174164), (6, 3478470), (9, 2318980), (10, 2087082), (12, 1739235), (15, 1391388), (18, 1159490), (20, 1043541), (30, 695694), (36, 579745), (45, 463796), (47, 444060), (60, 347847), (90, 231898), (94, 222030), (141, 148020), (180, 115949), (188, 111015), (235, 88812), (282, 74010), (423, 49340), (470, 44406), (564, 37005), (705, 29604), (846, 24670), (940, 22203), (1410, 14802), (1692, 12335), (2115, 9868), (2467, 8460), (2820, 7401), (4230, 4934)]