257876220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{239}}^1\times {\mathrm{367}}^1$

素因数の和:632

約数の個数: 144

約数和(自身を含む): 845752320

約数和(自身を除く): 587876100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 239, 245, 294, 367, 420, 478, 490, 588, 717, 734, 735, 956, 980, 1101, 1195, 1434, 1468, 1470, 1673, 1835, 2202, 2390, 2569, 2868, 2940, 3346, 3585, 3670, 4404, 4780, 5019, 5138, 5505, 6692, 7170, 7340, 7707, 8365, 10038, 10276, 11010, 11711, 12845, 14340, 15414, 16730, 17983, 20076, 22020, 23422, 25095, 25690, 30828, 33460, 35133, 35966, 38535, 46844, 50190, 51380, 53949, 58555, 70266, 71932, 77070, 87713, 89915, 100380, 107898, 117110, 140532, 154140, 175426, 175665, 179830, 215796, 234220, 263139, 269745, 350852, 351330, 359660, 438565, 526278, 539490, 613991, 702660, 877130, 1052556, 1078980, 1227982, 1315695, 1754260, 1841973, 2455964, 2631390, 3069955, 3683946, 4297937, 5262780, 6139910, 7367892, 8595874, 9209865, 12279820, 12893811, 17191748, 18419730, 21489685, 25787622, 36839460, 42979370, 51575244, 64469055, 85958740, 128938110, 257876220]

約数ペア:

[(1, 257876220), (2, 128938110), (3, 85958740), (4, 64469055), (5, 51575244), (6, 42979370), (7, 36839460), (10, 25787622), (12, 21489685), (14, 18419730), (15, 17191748), (20, 12893811), (21, 12279820), (28, 9209865), (30, 8595874), (35, 7367892), (42, 6139910), (49, 5262780), (60, 4297937), (70, 3683946), (84, 3069955), (98, 2631390), (105, 2455964), (140, 1841973), (147, 1754260), (196, 1315695), (210, 1227982), (239, 1078980), (245, 1052556), (294, 877130), (367, 702660), (420, 613991), (478, 539490), (490, 526278), (588, 438565), (717, 359660), (734, 351330), (735, 350852), (956, 269745), (980, 263139), (1101, 234220), (1195, 215796), (1434, 179830), (1468, 175665), (1470, 175426), (1673, 154140), (1835, 140532), (2202, 117110), (2390, 107898), (2569, 100380), (2868, 89915), (2940, 87713), (3346, 77070), (3585, 71932), (3670, 70266), (4404, 58555), (4780, 53949), (5019, 51380), (5138, 50190), (5505, 46844), (6692, 38535), (7170, 35966), (7340, 35133), (7707, 33460), (8365, 30828), (10038, 25690), (10276, 25095), (11010, 23422), (11711, 22020), (12845, 20076), (14340, 17983), (15414, 16730)]