20380160

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:461

約数の個数: 80

約数和(自身を含む): 51559200

約数和(自身を除く): 31179040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 419, 512, 608, 640, 760, 838, 1216, 1280, 1520, 1676, 2095, 2432, 2560, 3040, 3352, 4190, 4864, 6080, 6704, 7961, 8380, 9728, 12160, 13408, 15922, 16760, 24320, 26816, 31844, 33520, 39805, 48640, 53632, 63688, 67040, 79610, 107264, 127376, 134080, 159220, 214528, 254752, 268160, 318440, 509504, 536320, 636880, 1019008, 1072640, 1273760, 2038016, 2547520, 4076032, 5095040, 10190080, 20380160]

約数ペア:

[(1, 20380160), (2, 10190080), (4, 5095040), (5, 4076032), (8, 2547520), (10, 2038016), (16, 1273760), (19, 1072640), (20, 1019008), (32, 636880), (38, 536320), (40, 509504), (64, 318440), (76, 268160), (80, 254752), (95, 214528), (128, 159220), (152, 134080), (160, 127376), (190, 107264), (256, 79610), (304, 67040), (320, 63688), (380, 53632), (419, 48640), (512, 39805), (608, 33520), (640, 31844), (760, 26816), (838, 24320), (1216, 16760), (1280, 15922), (1520, 13408), (1676, 12160), (2095, 9728), (2432, 8380), (2560, 7961), (3040, 6704), (3352, 6080), (4190, 4864)]