644895232

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1081

約数の個数: 80

約数和(自身を含む): 1363912704

約数和(自身を除く): 719017472

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 64, 82, 124, 128, 164, 248, 256, 328, 496, 512, 656, 991, 992, 1271, 1312, 1982, 1984, 2542, 2624, 3964, 3968, 5084, 5248, 7928, 7936, 10168, 10496, 15856, 15872, 20336, 20992, 30721, 31712, 40631, 40672, 61442, 63424, 81262, 81344, 122884, 126848, 162524, 162688, 245768, 253696, 325048, 325376, 491536, 507392, 650096, 650752, 983072, 1259561, 1300192, 1966144, 2519122, 2600384, 3932288, 5038244, 5200768, 7864576, 10076488, 10401536, 15729152, 20152976, 20803072, 40305952, 80611904, 161223808, 322447616, 644895232]

約数ペア:

[(1, 644895232), (2, 322447616), (4, 161223808), (8, 80611904), (16, 40305952), (31, 20803072), (32, 20152976), (41, 15729152), (62, 10401536), (64, 10076488), (82, 7864576), (124, 5200768), (128, 5038244), (164, 3932288), (248, 2600384), (256, 2519122), (328, 1966144), (496, 1300192), (512, 1259561), (656, 983072), (991, 650752), (992, 650096), (1271, 507392), (1312, 491536), (1982, 325376), (1984, 325048), (2542, 253696), (2624, 245768), (3964, 162688), (3968, 162524), (5084, 126848), (5248, 122884), (7928, 81344), (7936, 81262), (10168, 63424), (10496, 61442), (15856, 40672), (15872, 40631), (20336, 31712), (20992, 30721)]