18721878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{809}}^1$

素因数の和:869

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 27934122

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 29, 38, 42, 57, 58, 87, 114, 133, 174, 203, 266, 399, 406, 551, 609, 798, 809, 1102, 1218, 1618, 1653, 2427, 3306, 3857, 4854, 5663, 7714, 11326, 11571, 15371, 16989, 23142, 23461, 30742, 33978, 46113, 46922, 70383, 92226, 107597, 140766, 164227, 215194, 322791, 328454, 445759, 492681, 645582, 891518, 985362, 1337277, 2674554, 3120313, 6240626, 9360939, 18721878]

約数ペア:

[(1, 18721878), (2, 9360939), (3, 6240626), (6, 3120313), (7, 2674554), (14, 1337277), (19, 985362), (21, 891518), (29, 645582), (38, 492681), (42, 445759), (57, 328454), (58, 322791), (87, 215194), (114, 164227), (133, 140766), (174, 107597), (203, 92226), (266, 70383), (399, 46922), (406, 46113), (551, 33978), (609, 30742), (798, 23461), (809, 23142), (1102, 16989), (1218, 15371), (1618, 11571), (1653, 11326), (2427, 7714), (3306, 5663), (3857, 4854)]