18663700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 108

約数和(自身を含む): 47621952

約数和(自身を除く): 28958252

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 47, 50, 55, 76, 94, 95, 100, 110, 188, 190, 209, 220, 235, 275, 361, 380, 418, 470, 475, 517, 550, 722, 836, 893, 940, 950, 1034, 1045, 1100, 1175, 1444, 1786, 1805, 1900, 2068, 2090, 2350, 2585, 3572, 3610, 3971, 4180, 4465, 4700, 5170, 5225, 7220, 7942, 8930, 9025, 9823, 10340, 10450, 12925, 15884, 16967, 17860, 18050, 19646, 19855, 20900, 22325, 25850, 33934, 36100, 39292, 39710, 44650, 49115, 51700, 67868, 79420, 84835, 89300, 98230, 99275, 169670, 186637, 196460, 198550, 245575, 339340, 373274, 397100, 424175, 491150, 746548, 848350, 933185, 982300, 1696700, 1866370, 3732740, 4665925, 9331850, 18663700]

約数ペア:

[(1, 18663700), (2, 9331850), (4, 4665925), (5, 3732740), (10, 1866370), (11, 1696700), (19, 982300), (20, 933185), (22, 848350), (25, 746548), (38, 491150), (44, 424175), (47, 397100), (50, 373274), (55, 339340), (76, 245575), (94, 198550), (95, 196460), (100, 186637), (110, 169670), (188, 99275), (190, 98230), (209, 89300), (220, 84835), (235, 79420), (275, 67868), (361, 51700), (380, 49115), (418, 44650), (470, 39710), (475, 39292), (517, 36100), (550, 33934), (722, 25850), (836, 22325), (893, 20900), (940, 19855), (950, 19646), (1034, 18050), (1045, 17860), (1100, 16967), (1175, 15884), (1444, 12925), (1786, 10450), (1805, 10340), (1900, 9823), (2068, 9025), (2090, 8930), (2350, 7942), (2585, 7220), (3572, 5225), (3610, 5170), (3971, 4700), (4180, 4465)]