21003669928

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{971}}^1\times {\mathrm{1409}}^1$

素因数の和:2506

約数の個数: 64

約数和(自身を含む): 41937912000

約数和(自身を除く): 20934242072

約数列:

[1, 2, 4, 8, 19, 38, 76, 101, 152, 202, 404, 808, 971, 1409, 1919, 1942, 2818, 3838, 3884, 5636, 7676, 7768, 11272, 15352, 18449, 26771, 36898, 53542, 73796, 98071, 107084, 142309, 147592, 196142, 214168, 284618, 392284, 569236, 784568, 1138472, 1368139, 1863349, 2703871, 2736278, 3726698, 5407742, 5472556, 7453396, 10815484, 10945112, 14906792, 21630968, 25994641, 51989282, 103978564, 138182039, 207957128, 276364078, 552728156, 1105456312, 2625458741, 5250917482, 10501834964, 21003669928]

約数ペア:

[(1, 21003669928), (2, 10501834964), (4, 5250917482), (8, 2625458741), (19, 1105456312), (38, 552728156), (76, 276364078), (101, 207957128), (152, 138182039), (202, 103978564), (404, 51989282), (808, 25994641), (971, 21630968), (1409, 14906792), (1919, 10945112), (1942, 10815484), (2818, 7453396), (3838, 5472556), (3884, 5407742), (5636, 3726698), (7676, 2736278), (7768, 2703871), (11272, 1863349), (15352, 1368139), (18449, 1138472), (26771, 784568), (36898, 569236), (53542, 392284), (73796, 284618), (98071, 214168), (107084, 196142), (142309, 147592)]