20473640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 55296000

約数和(自身を除く): 34822360

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 31, 38, 40, 44, 55, 62, 76, 79, 88, 95, 110, 124, 152, 155, 158, 190, 209, 220, 248, 310, 316, 341, 380, 395, 418, 440, 589, 620, 632, 682, 760, 790, 836, 869, 1045, 1178, 1240, 1364, 1501, 1580, 1672, 1705, 1738, 2090, 2356, 2449, 2728, 2945, 3002, 3160, 3410, 3476, 4180, 4345, 4712, 4898, 5890, 6004, 6479, 6820, 6952, 7505, 8360, 8690, 9796, 11780, 12008, 12245, 12958, 13640, 15010, 16511, 17380, 19592, 23560, 24490, 25916, 26939, 30020, 32395, 33022, 34760, 46531, 48980, 51832, 53878, 60040, 64790, 66044, 82555, 93062, 97960, 107756, 129580, 132088, 134695, 165110, 186124, 215512, 232655, 259160, 269390, 330220, 372248, 465310, 511841, 538780, 660440, 930620, 1023682, 1077560, 1861240, 2047364, 2559205, 4094728, 5118410, 10236820, 20473640]

約数ペア:

[(1, 20473640), (2, 10236820), (4, 5118410), (5, 4094728), (8, 2559205), (10, 2047364), (11, 1861240), (19, 1077560), (20, 1023682), (22, 930620), (31, 660440), (38, 538780), (40, 511841), (44, 465310), (55, 372248), (62, 330220), (76, 269390), (79, 259160), (88, 232655), (95, 215512), (110, 186124), (124, 165110), (152, 134695), (155, 132088), (158, 129580), (190, 107756), (209, 97960), (220, 93062), (248, 82555), (310, 66044), (316, 64790), (341, 60040), (380, 53878), (395, 51832), (418, 48980), (440, 46531), (589, 34760), (620, 33022), (632, 32395), (682, 30020), (760, 26939), (790, 25916), (836, 24490), (869, 23560), (1045, 19592), (1178, 17380), (1240, 16511), (1364, 15010), (1501, 13640), (1580, 12958), (1672, 12245), (1705, 12008), (1738, 11780), (2090, 9796), (2356, 8690), (2449, 8360), (2728, 7505), (2945, 6952), (3002, 6820), (3160, 6479), (3410, 6004), (3476, 5890), (4180, 4898), (4345, 4712)]