21921690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{751}}^1$

素因数の和:907

約数の個数: 64

約数和(自身を含む): 60641280

約数和(自身を除く): 38719590

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 139, 210, 278, 417, 695, 751, 834, 973, 1390, 1502, 1946, 2085, 2253, 2919, 3755, 4170, 4506, 4865, 5257, 5838, 7510, 9730, 10514, 11265, 14595, 15771, 22530, 26285, 29190, 31542, 52570, 78855, 104389, 157710, 208778, 313167, 521945, 626334, 730723, 1043890, 1461446, 1565835, 2192169, 3131670, 3653615, 4384338, 7307230, 10960845, 21921690]

約数ペア:

[(1, 21921690), (2, 10960845), (3, 7307230), (5, 4384338), (6, 3653615), (7, 3131670), (10, 2192169), (14, 1565835), (15, 1461446), (21, 1043890), (30, 730723), (35, 626334), (42, 521945), (70, 313167), (105, 208778), (139, 157710), (210, 104389), (278, 78855), (417, 52570), (695, 31542), (751, 29190), (834, 26285), (973, 22530), (1390, 15771), (1502, 14595), (1946, 11265), (2085, 10514), (2253, 9730), (2919, 7510), (3755, 5838), (4170, 5257), (4506, 4865)]