21927990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^3\times {\mathrm{2131}}^1$

素因数の和:2162

約数の個数: 64

約数和(自身を含む): 61401600

約数和(自身を除く): 39473610

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 343, 490, 686, 735, 1029, 1470, 1715, 2058, 2131, 3430, 4262, 5145, 6393, 10290, 10655, 12786, 14917, 21310, 29834, 31965, 44751, 63930, 74585, 89502, 104419, 149170, 208838, 223755, 313257, 447510, 522095, 626514, 730933, 1044190, 1461866, 1566285, 2192799, 3132570, 3654665, 4385598, 7309330, 10963995, 21927990]

約数ペア:

[(1, 21927990), (2, 10963995), (3, 7309330), (5, 4385598), (6, 3654665), (7, 3132570), (10, 2192799), (14, 1566285), (15, 1461866), (21, 1044190), (30, 730933), (35, 626514), (42, 522095), (49, 447510), (70, 313257), (98, 223755), (105, 208838), (147, 149170), (210, 104419), (245, 89502), (294, 74585), (343, 63930), (490, 44751), (686, 31965), (735, 29834), (1029, 21310), (1470, 14917), (1715, 12786), (2058, 10655), (2131, 10290), (3430, 6393), (4262, 5145)]