20019200

素因数分解:

$2^{11}\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:72

約数の個数: 144

約数和(自身を含む): 54840240

約数和(自身を除く): 34821040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 25, 32, 34, 40, 46, 50, 64, 68, 80, 85, 92, 100, 115, 128, 136, 160, 170, 184, 200, 230, 256, 272, 320, 340, 368, 391, 400, 425, 460, 512, 544, 575, 640, 680, 736, 782, 800, 850, 920, 1024, 1088, 1150, 1280, 1360, 1472, 1564, 1600, 1700, 1840, 1955, 2048, 2176, 2300, 2560, 2720, 2944, 3128, 3200, 3400, 3680, 3910, 4352, 4600, 5120, 5440, 5888, 6256, 6400, 6800, 7360, 7820, 8704, 9200, 9775, 10240, 10880, 11776, 12512, 12800, 13600, 14720, 15640, 17408, 18400, 19550, 21760, 23552, 25024, 25600, 27200, 29440, 31280, 34816, 36800, 39100, 43520, 47104, 50048, 51200, 54400, 58880, 62560, 73600, 78200, 87040, 100096, 108800, 117760, 125120, 147200, 156400, 174080, 200192, 217600, 235520, 250240, 294400, 312800, 400384, 435200, 500480, 588800, 625600, 800768, 870400, 1000960, 1177600, 1251200, 2001920, 2502400, 4003840, 5004800, 10009600, 20019200]

約数ペア:

[(1, 20019200), (2, 10009600), (4, 5004800), (5, 4003840), (8, 2502400), (10, 2001920), (16, 1251200), (17, 1177600), (20, 1000960), (23, 870400), (25, 800768), (32, 625600), (34, 588800), (40, 500480), (46, 435200), (50, 400384), (64, 312800), (68, 294400), (80, 250240), (85, 235520), (92, 217600), (100, 200192), (115, 174080), (128, 156400), (136, 147200), (160, 125120), (170, 117760), (184, 108800), (200, 100096), (230, 87040), (256, 78200), (272, 73600), (320, 62560), (340, 58880), (368, 54400), (391, 51200), (400, 50048), (425, 47104), (460, 43520), (512, 39100), (544, 36800), (575, 34816), (640, 31280), (680, 29440), (736, 27200), (782, 25600), (800, 25024), (850, 23552), (920, 21760), (1024, 19550), (1088, 18400), (1150, 17408), (1280, 15640), (1360, 14720), (1472, 13600), (1564, 12800), (1600, 12512), (1700, 11776), (1840, 10880), (1955, 10240), (2048, 9775), (2176, 9200), (2300, 8704), (2560, 7820), (2720, 7360), (2944, 6800), (3128, 6400), (3200, 6256), (3400, 5888), (3680, 5440), (3910, 5120), (4352, 4600)]