256875440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{9941}}^1$

素因数の和:9990

約数の個数: 80

約数和(自身を含む): 665716320

約数和(自身を除く): 408840880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 9941, 12920, 19882, 25840, 39764, 49705, 79528, 99410, 159056, 168997, 188879, 198820, 337994, 377758, 397640, 675988, 755516, 795280, 844985, 944395, 1351976, 1511032, 1689970, 1888790, 2703952, 3022064, 3210943, 3379940, 3777580, 6421886, 6759880, 7555160, 12843772, 13519760, 15110320, 16054715, 25687544, 32109430, 51375088, 64218860, 128437720, 256875440]

約数ペア:

[(1, 256875440), (2, 128437720), (4, 64218860), (5, 51375088), (8, 32109430), (10, 25687544), (16, 16054715), (17, 15110320), (19, 13519760), (20, 12843772), (34, 7555160), (38, 6759880), (40, 6421886), (68, 3777580), (76, 3379940), (80, 3210943), (85, 3022064), (95, 2703952), (136, 1888790), (152, 1689970), (170, 1511032), (190, 1351976), (272, 944395), (304, 844985), (323, 795280), (340, 755516), (380, 675988), (646, 397640), (680, 377758), (760, 337994), (1292, 198820), (1360, 188879), (1520, 168997), (1615, 159056), (2584, 99410), (3230, 79528), (5168, 49705), (6460, 39764), (9941, 25840), (12920, 19882)]