21067080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:503

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 48916920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 24, 30, 34, 40, 46, 51, 60, 68, 69, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 230, 255, 276, 340, 345, 391, 408, 449, 460, 510, 552, 680, 690, 782, 898, 920, 1020, 1173, 1347, 1380, 1564, 1796, 1955, 2040, 2245, 2346, 2694, 2760, 3128, 3592, 3910, 4490, 4692, 5388, 5865, 6735, 7633, 7820, 8980, 9384, 10327, 10776, 11730, 13470, 15266, 15640, 17960, 20654, 22899, 23460, 26940, 30532, 30981, 38165, 41308, 45798, 46920, 51635, 53880, 61064, 61962, 76330, 82616, 91596, 103270, 114495, 123924, 152660, 154905, 175559, 183192, 206540, 228990, 247848, 305320, 309810, 351118, 413080, 457980, 526677, 619620, 702236, 877795, 915960, 1053354, 1239240, 1404472, 1755590, 2106708, 2633385, 3511180, 4213416, 5266770, 7022360, 10533540, 21067080]

約数ペア:

[(1, 21067080), (2, 10533540), (3, 7022360), (4, 5266770), (5, 4213416), (6, 3511180), (8, 2633385), (10, 2106708), (12, 1755590), (15, 1404472), (17, 1239240), (20, 1053354), (23, 915960), (24, 877795), (30, 702236), (34, 619620), (40, 526677), (46, 457980), (51, 413080), (60, 351118), (68, 309810), (69, 305320), (85, 247848), (92, 228990), (102, 206540), (115, 183192), (120, 175559), (136, 154905), (138, 152660), (170, 123924), (184, 114495), (204, 103270), (230, 91596), (255, 82616), (276, 76330), (340, 61962), (345, 61064), (391, 53880), (408, 51635), (449, 46920), (460, 45798), (510, 41308), (552, 38165), (680, 30981), (690, 30532), (782, 26940), (898, 23460), (920, 22899), (1020, 20654), (1173, 17960), (1347, 15640), (1380, 15266), (1564, 13470), (1796, 11730), (1955, 10776), (2040, 10327), (2245, 9384), (2346, 8980), (2694, 7820), (2760, 7633), (3128, 6735), (3592, 5865), (3910, 5388), (4490, 4692)]