251147320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 622080000

約数和(自身を除く): 370932680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 79, 89, 94, 95, 152, 158, 178, 188, 190, 235, 316, 356, 376, 380, 395, 445, 470, 632, 712, 760, 790, 890, 893, 940, 1501, 1580, 1691, 1780, 1786, 1880, 3002, 3160, 3382, 3560, 3572, 3713, 4183, 4465, 6004, 6764, 7031, 7144, 7426, 7505, 8366, 8455, 8930, 12008, 13528, 14062, 14852, 15010, 16732, 16910, 17860, 18565, 20915, 28124, 29704, 30020, 33464, 33820, 35155, 35720, 37130, 41830, 56248, 60040, 67640, 70310, 70547, 74260, 79477, 83660, 133589, 140620, 141094, 148520, 158954, 167320, 267178, 281240, 282188, 317908, 330457, 352735, 397385, 534356, 564376, 635816, 660914, 667945, 705470, 794770, 1068712, 1321828, 1335890, 1410940, 1589540, 1652285, 2643656, 2671780, 2821880, 3179080, 3304570, 5343560, 6278683, 6609140, 12557366, 13218280, 25114732, 31393415, 50229464, 62786830, 125573660, 251147320]

約数ペア:

[(1, 251147320), (2, 125573660), (4, 62786830), (5, 50229464), (8, 31393415), (10, 25114732), (19, 13218280), (20, 12557366), (38, 6609140), (40, 6278683), (47, 5343560), (76, 3304570), (79, 3179080), (89, 2821880), (94, 2671780), (95, 2643656), (152, 1652285), (158, 1589540), (178, 1410940), (188, 1335890), (190, 1321828), (235, 1068712), (316, 794770), (356, 705470), (376, 667945), (380, 660914), (395, 635816), (445, 564376), (470, 534356), (632, 397385), (712, 352735), (760, 330457), (790, 317908), (890, 282188), (893, 281240), (940, 267178), (1501, 167320), (1580, 158954), (1691, 148520), (1780, 141094), (1786, 140620), (1880, 133589), (3002, 83660), (3160, 79477), (3382, 74260), (3560, 70547), (3572, 70310), (3713, 67640), (4183, 60040), (4465, 56248), (6004, 41830), (6764, 37130), (7031, 35720), (7144, 35155), (7426, 33820), (7505, 33464), (8366, 30020), (8455, 29704), (8930, 28124), (12008, 20915), (13528, 18565), (14062, 17860), (14852, 16910), (15010, 16732)]