19881968944

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{11939}}^1$

素因数の和:12110

約数の個数: 80

約数和(自身を含む): 41352040800

約数和(自身を除く): 21470071856

約数列:

[1, 2, 4, 8, 16, 29, 37, 58, 74, 97, 116, 148, 194, 232, 296, 388, 464, 592, 776, 1073, 1552, 2146, 2813, 3589, 4292, 5626, 7178, 8584, 11252, 11939, 14356, 17168, 22504, 23878, 28712, 45008, 47756, 57424, 95512, 104081, 191024, 208162, 346231, 416324, 441743, 692462, 832648, 883486, 1158083, 1384924, 1665296, 1766972, 2316166, 2769848, 3533944, 4632332, 5539696, 7067888, 9264664, 12810547, 18529328, 25621094, 33584407, 42849071, 51242188, 67168814, 85698142, 102484376, 134337628, 171396284, 204968752, 268675256, 342792568, 537350512, 685585136, 1242623059, 2485246118, 4970492236, 9940984472, 19881968944]

約数ペア:

[(1, 19881968944), (2, 9940984472), (4, 4970492236), (8, 2485246118), (16, 1242623059), (29, 685585136), (37, 537350512), (58, 342792568), (74, 268675256), (97, 204968752), (116, 171396284), (148, 134337628), (194, 102484376), (232, 85698142), (296, 67168814), (388, 51242188), (464, 42849071), (592, 33584407), (776, 25621094), (1073, 18529328), (1552, 12810547), (2146, 9264664), (2813, 7067888), (3589, 5539696), (4292, 4632332), (5626, 3533944), (7178, 2769848), (8584, 2316166), (11252, 1766972), (11939, 1665296), (14356, 1384924), (17168, 1158083), (22504, 883486), (23878, 832648), (28712, 692462), (45008, 441743), (47756, 416324), (57424, 346231), (95512, 208162), (104081, 191024)]