78775840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1$

素因数の和:363

約数の個数: 144

約数和(自身を含む): 221004504

約数和(自身を除く): 142228664

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 130, 143, 160, 176, 208, 220, 242, 260, 286, 313, 352, 416, 440, 484, 520, 572, 605, 626, 715, 880, 968, 1040, 1144, 1210, 1252, 1430, 1565, 1573, 1760, 1936, 2080, 2288, 2420, 2504, 2860, 3130, 3146, 3443, 3872, 4069, 4576, 4840, 5008, 5720, 6260, 6292, 6886, 7865, 8138, 9680, 10016, 11440, 12520, 12584, 13772, 15730, 16276, 17215, 19360, 20345, 22880, 25040, 25168, 27544, 31460, 32552, 34430, 37873, 40690, 44759, 50080, 50336, 55088, 62920, 65104, 68860, 75746, 81380, 89518, 110176, 125840, 130208, 137720, 151492, 162760, 179036, 189365, 223795, 251680, 275440, 302984, 325520, 358072, 378730, 447590, 492349, 550880, 605968, 651040, 716144, 757460, 895180, 984698, 1211936, 1432288, 1514920, 1790360, 1969396, 2461745, 3029840, 3580720, 3938792, 4923490, 6059680, 7161440, 7877584, 9846980, 15755168, 19693960, 39387920, 78775840]

約数ペア:

[(1, 78775840), (2, 39387920), (4, 19693960), (5, 15755168), (8, 9846980), (10, 7877584), (11, 7161440), (13, 6059680), (16, 4923490), (20, 3938792), (22, 3580720), (26, 3029840), (32, 2461745), (40, 1969396), (44, 1790360), (52, 1514920), (55, 1432288), (65, 1211936), (80, 984698), (88, 895180), (104, 757460), (110, 716144), (121, 651040), (130, 605968), (143, 550880), (160, 492349), (176, 447590), (208, 378730), (220, 358072), (242, 325520), (260, 302984), (286, 275440), (313, 251680), (352, 223795), (416, 189365), (440, 179036), (484, 162760), (520, 151492), (572, 137720), (605, 130208), (626, 125840), (715, 110176), (880, 89518), (968, 81380), (1040, 75746), (1144, 68860), (1210, 65104), (1252, 62920), (1430, 55088), (1565, 50336), (1573, 50080), (1760, 44759), (1936, 40690), (2080, 37873), (2288, 34430), (2420, 32552), (2504, 31460), (2860, 27544), (3130, 25168), (3146, 25040), (3443, 22880), (3872, 20345), (4069, 19360), (4576, 17215), (4840, 16276), (5008, 15730), (5720, 13772), (6260, 12584), (6292, 12520), (6886, 11440), (7865, 10016), (8138, 9680)]