21207791488

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{7537}}^1$

素因数の和:7672

約数の個数: 128

約数和(自身を含む): 48439188000

約数和(自身を除く): 27231396512

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 89, 104, 128, 152, 178, 208, 247, 304, 356, 416, 494, 608, 712, 832, 988, 1157, 1216, 1424, 1664, 1691, 1976, 2314, 2432, 2848, 3382, 3952, 4628, 5696, 6764, 7537, 7904, 9256, 11392, 13528, 15074, 15808, 18512, 21983, 27056, 30148, 31616, 37024, 43966, 54112, 60296, 74048, 87932, 97981, 108224, 120592, 143203, 148096, 175864, 195962, 216448, 241184, 286406, 351728, 391924, 482368, 572812, 670793, 703456, 783848, 964736, 1145624, 1341586, 1406912, 1567696, 1861639, 2291248, 2683172, 2813824, 3135392, 3723278, 4582496, 5366344, 6270784, 7446556, 8720309, 9164992, 10732688, 12541568, 12745067, 14893112, 17440618, 18329984, 21465376, 25490134, 29786224, 34881236, 42930752, 50980268, 59572448, 69762472, 85861504, 101960536, 119144896, 139524944, 165685871, 203921072, 238289792, 279049888, 331371742, 407842144, 558099776, 662743484, 815684288, 1116199552, 1325486968, 1631368576, 2650973936, 5301947872, 10603895744, 21207791488]

約数ペア:

[(1, 21207791488), (2, 10603895744), (4, 5301947872), (8, 2650973936), (13, 1631368576), (16, 1325486968), (19, 1116199552), (26, 815684288), (32, 662743484), (38, 558099776), (52, 407842144), (64, 331371742), (76, 279049888), (89, 238289792), (104, 203921072), (128, 165685871), (152, 139524944), (178, 119144896), (208, 101960536), (247, 85861504), (304, 69762472), (356, 59572448), (416, 50980268), (494, 42930752), (608, 34881236), (712, 29786224), (832, 25490134), (988, 21465376), (1157, 18329984), (1216, 17440618), (1424, 14893112), (1664, 12745067), (1691, 12541568), (1976, 10732688), (2314, 9164992), (2432, 8720309), (2848, 7446556), (3382, 6270784), (3952, 5366344), (4628, 4582496), (5696, 3723278), (6764, 3135392), (7537, 2813824), (7904, 2683172), (9256, 2291248), (11392, 1861639), (13528, 1567696), (15074, 1406912), (15808, 1341586), (18512, 1145624), (21983, 964736), (27056, 783848), (30148, 703456), (31616, 670793), (37024, 572812), (43966, 482368), (54112, 391924), (60296, 351728), (74048, 286406), (87932, 241184), (97981, 216448), (108224, 195962), (120592, 175864), (143203, 148096)]