19884640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 96

約数和(自身を含む): 51287040

約数和(自身を除く): 31402400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 152, 155, 160, 190, 211, 248, 304, 310, 380, 422, 496, 589, 608, 620, 760, 844, 992, 1055, 1178, 1240, 1520, 1688, 2110, 2356, 2480, 2945, 3040, 3376, 4009, 4220, 4712, 4960, 5890, 6541, 6752, 8018, 8440, 9424, 11780, 13082, 16036, 16880, 18848, 20045, 23560, 26164, 32072, 32705, 33760, 40090, 47120, 52328, 64144, 65410, 80180, 94240, 104656, 124279, 128288, 130820, 160360, 209312, 248558, 261640, 320720, 497116, 523280, 621395, 641440, 994232, 1046560, 1242790, 1988464, 2485580, 3976928, 4971160, 9942320, 19884640]

約数ペア:

[(1, 19884640), (2, 9942320), (4, 4971160), (5, 3976928), (8, 2485580), (10, 1988464), (16, 1242790), (19, 1046560), (20, 994232), (31, 641440), (32, 621395), (38, 523280), (40, 497116), (62, 320720), (76, 261640), (80, 248558), (95, 209312), (124, 160360), (152, 130820), (155, 128288), (160, 124279), (190, 104656), (211, 94240), (248, 80180), (304, 65410), (310, 64144), (380, 52328), (422, 47120), (496, 40090), (589, 33760), (608, 32705), (620, 32072), (760, 26164), (844, 23560), (992, 20045), (1055, 18848), (1178, 16880), (1240, 16036), (1520, 13082), (1688, 11780), (2110, 9424), (2356, 8440), (2480, 8018), (2945, 6752), (3040, 6541), (3376, 5890), (4009, 4960), (4220, 4712)]