208935040

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{10531}}^1$

素因数の和:10581

約数の個数: 64

約数和(自身を含む): 515646720

約数和(自身を除く): 306711680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 10531, 19840, 21062, 42124, 52655, 84248, 105310, 168496, 210620, 326461, 336992, 421240, 652922, 673984, 842480, 1305844, 1347968, 1632305, 1684960, 2611688, 3264610, 3369920, 5223376, 6529220, 6739840, 10446752, 13058440, 20893504, 26116880, 41787008, 52233760, 104467520, 208935040]

約数ペア:

[(1, 208935040), (2, 104467520), (4, 52233760), (5, 41787008), (8, 26116880), (10, 20893504), (16, 13058440), (20, 10446752), (31, 6739840), (32, 6529220), (40, 5223376), (62, 3369920), (64, 3264610), (80, 2611688), (124, 1684960), (128, 1632305), (155, 1347968), (160, 1305844), (248, 842480), (310, 673984), (320, 652922), (496, 421240), (620, 336992), (640, 326461), (992, 210620), (1240, 168496), (1984, 105310), (2480, 84248), (3968, 52655), (4960, 42124), (9920, 21062), (10531, 19840)]