21949928

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2741}}^1$

素因数の和:2778

約数の個数: 64

約数和(自身を含む): 55278720

約数和(自身を除く): 33328792

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2741, 4004, 5482, 8008, 10964, 19187, 21928, 30151, 35633, 38374, 60302, 71266, 76748, 120604, 142532, 153496, 211057, 241208, 249431, 285064, 391963, 422114, 498862, 783926, 844228, 997724, 1567852, 1688456, 1995448, 2743741, 3135704, 5487482, 10974964, 21949928]

約数ペア:

[(1, 21949928), (2, 10974964), (4, 5487482), (7, 3135704), (8, 2743741), (11, 1995448), (13, 1688456), (14, 1567852), (22, 997724), (26, 844228), (28, 783926), (44, 498862), (52, 422114), (56, 391963), (77, 285064), (88, 249431), (91, 241208), (104, 211057), (143, 153496), (154, 142532), (182, 120604), (286, 76748), (308, 71266), (364, 60302), (572, 38374), (616, 35633), (728, 30151), (1001, 21928), (1144, 19187), (2002, 10964), (2741, 8008), (4004, 5482)]