128129920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:336

約数の個数: 128

約数和(自身を含む): 331581600

約数和(自身を除く): 203451680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 64, 76, 80, 82, 95, 128, 152, 160, 164, 190, 205, 257, 304, 320, 328, 380, 410, 514, 608, 640, 656, 760, 779, 820, 1028, 1216, 1285, 1312, 1520, 1558, 1640, 2056, 2432, 2570, 2624, 3040, 3116, 3280, 3895, 4112, 4883, 5140, 5248, 6080, 6232, 6560, 7790, 8224, 9766, 10280, 10537, 12160, 12464, 13120, 15580, 16448, 19532, 20560, 21074, 24415, 24928, 26240, 31160, 32896, 39064, 41120, 42148, 48830, 49856, 52685, 62320, 78128, 82240, 84296, 97660, 99712, 105370, 124640, 156256, 164480, 168592, 195320, 200203, 210740, 249280, 312512, 337184, 390640, 400406, 421480, 498560, 625024, 674368, 781280, 800812, 842960, 1001015, 1348736, 1562560, 1601624, 1685920, 2002030, 3125120, 3203248, 3371840, 4004060, 6406496, 6743680, 8008120, 12812992, 16016240, 25625984, 32032480, 64064960, 128129920]

約数ペア:

[(1, 128129920), (2, 64064960), (4, 32032480), (5, 25625984), (8, 16016240), (10, 12812992), (16, 8008120), (19, 6743680), (20, 6406496), (32, 4004060), (38, 3371840), (40, 3203248), (41, 3125120), (64, 2002030), (76, 1685920), (80, 1601624), (82, 1562560), (95, 1348736), (128, 1001015), (152, 842960), (160, 800812), (164, 781280), (190, 674368), (205, 625024), (257, 498560), (304, 421480), (320, 400406), (328, 390640), (380, 337184), (410, 312512), (514, 249280), (608, 210740), (640, 200203), (656, 195320), (760, 168592), (779, 164480), (820, 156256), (1028, 124640), (1216, 105370), (1285, 99712), (1312, 97660), (1520, 84296), (1558, 82240), (1640, 78128), (2056, 62320), (2432, 52685), (2570, 49856), (2624, 48830), (3040, 42148), (3116, 41120), (3280, 39064), (3895, 32896), (4112, 31160), (4883, 26240), (5140, 24928), (5248, 24415), (6080, 21074), (6232, 20560), (6560, 19532), (7790, 16448), (8224, 15580), (9766, 13120), (10280, 12464), (10537, 12160)]