21399390

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{911}}^1$

素因数の和:959

約数の個数: 80

約数和(自身を含む): 59590080

約数和(自身を除く): 38190690

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 45, 54, 58, 81, 87, 90, 135, 145, 162, 174, 261, 270, 290, 405, 435, 522, 783, 810, 870, 911, 1305, 1566, 1822, 2349, 2610, 2733, 3915, 4555, 4698, 5466, 7830, 8199, 9110, 11745, 13665, 16398, 23490, 24597, 26419, 27330, 40995, 49194, 52838, 73791, 79257, 81990, 122985, 132095, 147582, 158514, 237771, 245970, 264190, 368955, 396285, 475542, 713313, 737910, 792570, 1188855, 1426626, 2139939, 2377710, 3566565, 4279878, 7133130, 10699695, 21399390]

約数ペア:

[(1, 21399390), (2, 10699695), (3, 7133130), (5, 4279878), (6, 3566565), (9, 2377710), (10, 2139939), (15, 1426626), (18, 1188855), (27, 792570), (29, 737910), (30, 713313), (45, 475542), (54, 396285), (58, 368955), (81, 264190), (87, 245970), (90, 237771), (135, 158514), (145, 147582), (162, 132095), (174, 122985), (261, 81990), (270, 79257), (290, 73791), (405, 52838), (435, 49194), (522, 40995), (783, 27330), (810, 26419), (870, 24597), (911, 23490), (1305, 16398), (1566, 13665), (1822, 11745), (2349, 9110), (2610, 8199), (2733, 7830), (3915, 5466), (4555, 4698)]