640545984

素因数分解:

$2^6\times 3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:815

約数の個数: 168

約数和(自身を含む): 1995385392

約数和(自身を除く): 1354839408

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 64, 72, 78, 96, 104, 117, 131, 144, 156, 192, 208, 234, 262, 288, 312, 393, 416, 468, 524, 576, 624, 653, 786, 832, 936, 1048, 1179, 1248, 1306, 1572, 1703, 1872, 1959, 2096, 2358, 2496, 2612, 3144, 3406, 3744, 3918, 4192, 4716, 5109, 5224, 5877, 6288, 6812, 7488, 7836, 8384, 8489, 9432, 10218, 10448, 11754, 12576, 13624, 15327, 15672, 16978, 18864, 20436, 20896, 23508, 25152, 25467, 27248, 30654, 31344, 33956, 37728, 40872, 41792, 47016, 50934, 54496, 61308, 62688, 67912, 75456, 76401, 81744, 85543, 94032, 101868, 108992, 122616, 125376, 135824, 152802, 163488, 171086, 188064, 203736, 245232, 256629, 271648, 305604, 326976, 342172, 376128, 407472, 490464, 513258, 543296, 611208, 684344, 769887, 814944, 980928, 1026516, 1112059, 1222416, 1368688, 1539774, 1629888, 2053032, 2224118, 2444832, 2737376, 3079548, 3336177, 4106064, 4448236, 4889664, 5474752, 6159096, 6672354, 8212128, 8896472, 10008531, 12318192, 13344708, 16424256, 17792944, 20017062, 24636384, 26689416, 35585888, 40034124, 49272768, 53378832, 71171776, 80068248, 106757664, 160136496, 213515328, 320272992, 640545984]

約数ペア:

[(1, 640545984), (2, 320272992), (3, 213515328), (4, 160136496), (6, 106757664), (8, 80068248), (9, 71171776), (12, 53378832), (13, 49272768), (16, 40034124), (18, 35585888), (24, 26689416), (26, 24636384), (32, 20017062), (36, 17792944), (39, 16424256), (48, 13344708), (52, 12318192), (64, 10008531), (72, 8896472), (78, 8212128), (96, 6672354), (104, 6159096), (117, 5474752), (131, 4889664), (144, 4448236), (156, 4106064), (192, 3336177), (208, 3079548), (234, 2737376), (262, 2444832), (288, 2224118), (312, 2053032), (393, 1629888), (416, 1539774), (468, 1368688), (524, 1222416), (576, 1112059), (624, 1026516), (653, 980928), (786, 814944), (832, 769887), (936, 684344), (1048, 611208), (1179, 543296), (1248, 513258), (1306, 490464), (1572, 407472), (1703, 376128), (1872, 342172), (1959, 326976), (2096, 305604), (2358, 271648), (2496, 256629), (2612, 245232), (3144, 203736), (3406, 188064), (3744, 171086), (3918, 163488), (4192, 152802), (4716, 135824), (5109, 125376), (5224, 122616), (5877, 108992), (6288, 101868), (6812, 94032), (7488, 85543), (7836, 81744), (8384, 76401), (8489, 75456), (9432, 67912), (10218, 62688), (10448, 61308), (11754, 54496), (12576, 50934), (13624, 47016), (15327, 41792), (15672, 40872), (16978, 37728), (18864, 33956), (20436, 31344), (20896, 30654), (23508, 27248), (25152, 25467)]