257867220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19447}}^1$

素因数の和:19489

約数の個数: 96

約数和(自身を含む): 823350528

約数和(自身を除く): 565483308

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 2210, 2652, 3315, 4420, 6630, 13260, 19447, 38894, 58341, 77788, 97235, 116682, 194470, 233364, 252811, 291705, 330599, 388940, 505622, 583410, 661198, 758433, 991797, 1011244, 1166820, 1264055, 1322396, 1516866, 1652995, 1983594, 2528110, 3033732, 3305990, 3792165, 3967188, 4297787, 4958985, 5056220, 6611980, 7584330, 8595574, 9917970, 12893361, 15168660, 17191148, 19835940, 21488935, 25786722, 42977870, 51573444, 64466805, 85955740, 128933610, 257867220]

約数ペア:

[(1, 257867220), (2, 128933610), (3, 85955740), (4, 64466805), (5, 51573444), (6, 42977870), (10, 25786722), (12, 21488935), (13, 19835940), (15, 17191148), (17, 15168660), (20, 12893361), (26, 9917970), (30, 8595574), (34, 7584330), (39, 6611980), (51, 5056220), (52, 4958985), (60, 4297787), (65, 3967188), (68, 3792165), (78, 3305990), (85, 3033732), (102, 2528110), (130, 1983594), (156, 1652995), (170, 1516866), (195, 1322396), (204, 1264055), (221, 1166820), (255, 1011244), (260, 991797), (340, 758433), (390, 661198), (442, 583410), (510, 505622), (663, 388940), (780, 330599), (884, 291705), (1020, 252811), (1105, 233364), (1326, 194470), (2210, 116682), (2652, 97235), (3315, 77788), (4420, 58341), (6630, 38894), (13260, 19447)]