68780320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:343

約数の個数: 144

約数和(自身を含む): 195810048

約数和(自身を除く): 127029728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 283, 310, 392, 434, 490, 496, 560, 566, 620, 784, 868, 980, 992, 1085, 1120, 1132, 1240, 1415, 1519, 1568, 1736, 1960, 1981, 2170, 2264, 2480, 2830, 3038, 3472, 3920, 3962, 4340, 4528, 4960, 5660, 6076, 6944, 7595, 7840, 7924, 8680, 8773, 9056, 9905, 11320, 12152, 13867, 15190, 15848, 17360, 17546, 19810, 22640, 24304, 27734, 30380, 31696, 34720, 35092, 39620, 43865, 45280, 48608, 55468, 60760, 61411, 63392, 69335, 70184, 79240, 87730, 110936, 121520, 122822, 138670, 140368, 158480, 175460, 221872, 243040, 245644, 277340, 280736, 307055, 316960, 350920, 429877, 443744, 491288, 554680, 614110, 701840, 859754, 982576, 1109360, 1228220, 1403680, 1719508, 1965152, 2149385, 2218720, 2456440, 3439016, 4298770, 4912880, 6878032, 8597540, 9825760, 13756064, 17195080, 34390160, 68780320]

約数ペア:

[(1, 68780320), (2, 34390160), (4, 17195080), (5, 13756064), (7, 9825760), (8, 8597540), (10, 6878032), (14, 4912880), (16, 4298770), (20, 3439016), (28, 2456440), (31, 2218720), (32, 2149385), (35, 1965152), (40, 1719508), (49, 1403680), (56, 1228220), (62, 1109360), (70, 982576), (80, 859754), (98, 701840), (112, 614110), (124, 554680), (140, 491288), (155, 443744), (160, 429877), (196, 350920), (217, 316960), (224, 307055), (245, 280736), (248, 277340), (280, 245644), (283, 243040), (310, 221872), (392, 175460), (434, 158480), (490, 140368), (496, 138670), (560, 122822), (566, 121520), (620, 110936), (784, 87730), (868, 79240), (980, 70184), (992, 69335), (1085, 63392), (1120, 61411), (1132, 60760), (1240, 55468), (1415, 48608), (1519, 45280), (1568, 43865), (1736, 39620), (1960, 35092), (1981, 34720), (2170, 31696), (2264, 30380), (2480, 27734), (2830, 24304), (3038, 22640), (3472, 19810), (3920, 17546), (3962, 17360), (4340, 15848), (4528, 15190), (4960, 13867), (5660, 12152), (6076, 11320), (6944, 9905), (7595, 9056), (7840, 8773), (7924, 8680)]