21478908

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 37227012

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 29, 31, 33, 44, 58, 62, 66, 87, 93, 116, 124, 132, 174, 181, 186, 319, 341, 348, 362, 372, 543, 638, 682, 724, 899, 957, 1023, 1086, 1276, 1364, 1798, 1914, 1991, 2046, 2172, 2697, 3596, 3828, 3982, 4092, 5249, 5394, 5611, 5973, 7964, 9889, 10498, 10788, 11222, 11946, 15747, 16833, 19778, 20996, 22444, 23892, 29667, 31494, 33666, 39556, 57739, 59334, 61721, 62988, 67332, 115478, 118668, 123442, 162719, 173217, 185163, 230956, 246884, 325438, 346434, 370326, 488157, 650876, 692868, 740652, 976314, 1789909, 1952628, 3579818, 5369727, 7159636, 10739454, 21478908]

約数ペア:

[(1, 21478908), (2, 10739454), (3, 7159636), (4, 5369727), (6, 3579818), (11, 1952628), (12, 1789909), (22, 976314), (29, 740652), (31, 692868), (33, 650876), (44, 488157), (58, 370326), (62, 346434), (66, 325438), (87, 246884), (93, 230956), (116, 185163), (124, 173217), (132, 162719), (174, 123442), (181, 118668), (186, 115478), (319, 67332), (341, 62988), (348, 61721), (362, 59334), (372, 57739), (543, 39556), (638, 33666), (682, 31494), (724, 29667), (899, 23892), (957, 22444), (1023, 20996), (1086, 19778), (1276, 16833), (1364, 15747), (1798, 11946), (1914, 11222), (1991, 10788), (2046, 10498), (2172, 9889), (2697, 7964), (3596, 5973), (3828, 5611), (3982, 5394), (4092, 5249)]