19743280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:482

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 30253520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 419, 496, 589, 620, 760, 838, 1178, 1240, 1520, 1676, 2095, 2356, 2480, 2945, 3352, 4190, 4712, 5890, 6704, 7961, 8380, 9424, 11780, 12989, 15922, 16760, 23560, 25978, 31844, 33520, 39805, 47120, 51956, 63688, 64945, 79610, 103912, 127376, 129890, 159220, 207824, 246791, 259780, 318440, 493582, 519560, 636880, 987164, 1039120, 1233955, 1974328, 2467910, 3948656, 4935820, 9871640, 19743280]

約数ペア:

[(1, 19743280), (2, 9871640), (4, 4935820), (5, 3948656), (8, 2467910), (10, 1974328), (16, 1233955), (19, 1039120), (20, 987164), (31, 636880), (38, 519560), (40, 493582), (62, 318440), (76, 259780), (80, 246791), (95, 207824), (124, 159220), (152, 129890), (155, 127376), (190, 103912), (248, 79610), (304, 64945), (310, 63688), (380, 51956), (419, 47120), (496, 39805), (589, 33520), (620, 31844), (760, 25978), (838, 23560), (1178, 16760), (1240, 15922), (1520, 12989), (1676, 11780), (2095, 9424), (2356, 8380), (2480, 7961), (2945, 6704), (3352, 5890), (4190, 4712)]