21770320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1$

素因数の和:221

約数の個数: 120

約数和(自身を含む): 60261768

約数和(自身を除く): 38491448

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 130, 143, 173, 176, 208, 220, 242, 260, 286, 346, 440, 484, 520, 572, 605, 692, 715, 865, 880, 968, 1040, 1144, 1210, 1384, 1430, 1573, 1730, 1903, 1936, 2249, 2288, 2420, 2768, 2860, 3146, 3460, 3806, 4498, 4840, 5720, 6292, 6920, 7612, 7865, 8996, 9515, 9680, 11245, 11440, 12584, 13840, 15224, 15730, 17992, 19030, 20933, 22490, 24739, 25168, 30448, 31460, 35984, 38060, 41866, 44980, 49478, 62920, 76120, 83732, 89960, 98956, 104665, 123695, 125840, 152240, 167464, 179920, 197912, 209330, 247390, 272129, 334928, 395824, 418660, 494780, 544258, 837320, 989560, 1088516, 1360645, 1674640, 1979120, 2177032, 2721290, 4354064, 5442580, 10885160, 21770320]

約数ペア:

[(1, 21770320), (2, 10885160), (4, 5442580), (5, 4354064), (8, 2721290), (10, 2177032), (11, 1979120), (13, 1674640), (16, 1360645), (20, 1088516), (22, 989560), (26, 837320), (40, 544258), (44, 494780), (52, 418660), (55, 395824), (65, 334928), (80, 272129), (88, 247390), (104, 209330), (110, 197912), (121, 179920), (130, 167464), (143, 152240), (173, 125840), (176, 123695), (208, 104665), (220, 98956), (242, 89960), (260, 83732), (286, 76120), (346, 62920), (440, 49478), (484, 44980), (520, 41866), (572, 38060), (605, 35984), (692, 31460), (715, 30448), (865, 25168), (880, 24739), (968, 22490), (1040, 20933), (1144, 19030), (1210, 17992), (1384, 15730), (1430, 15224), (1573, 13840), (1730, 12584), (1903, 11440), (1936, 11245), (2249, 9680), (2288, 9515), (2420, 8996), (2768, 7865), (2860, 7612), (3146, 6920), (3460, 6292), (3806, 5720), (4498, 4840)]