21000598850

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{557}}^1\times {\mathrm{1399}}^1$

素因数の和:1993

約数の個数: 144

約数和(自身を含む): 49693694400

約数和(自身を除く): 28693095550

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 49, 50, 55, 70, 77, 98, 110, 154, 175, 245, 275, 350, 385, 490, 539, 550, 557, 770, 1078, 1114, 1225, 1399, 1925, 2450, 2695, 2785, 2798, 3850, 3899, 5390, 5570, 6127, 6995, 7798, 9793, 12254, 13475, 13925, 13990, 15389, 19495, 19586, 26950, 27293, 27850, 30635, 30778, 34975, 38990, 42889, 48965, 54586, 61270, 68551, 69950, 76945, 85778, 97475, 97930, 107723, 136465, 137102, 153175, 153890, 194950, 214445, 215446, 244825, 272930, 300223, 306350, 342755, 384725, 428890, 489650, 538615, 600446, 682325, 685510, 754061, 769450, 779243, 1072225, 1077230, 1364650, 1501115, 1508122, 1558486, 1713775, 2144450, 2693075, 3002230, 3427550, 3770305, 3896215, 5386150, 5454701, 7505575, 7540610, 7792430, 8571673, 10909402, 15011150, 17143346, 18851525, 19481075, 27273505, 37703050, 38182907, 38962150, 42858365, 54547010, 60001711, 76365814, 85716730, 120003422, 136367525, 190914535, 214291825, 272735050, 300008555, 381829070, 420011977, 428583650, 600017110, 840023954, 954572675, 1500042775, 1909145350, 2100059885, 3000085550, 4200119770, 10500299425, 21000598850]

約数ペア:

[(1, 21000598850), (2, 10500299425), (5, 4200119770), (7, 3000085550), (10, 2100059885), (11, 1909145350), (14, 1500042775), (22, 954572675), (25, 840023954), (35, 600017110), (49, 428583650), (50, 420011977), (55, 381829070), (70, 300008555), (77, 272735050), (98, 214291825), (110, 190914535), (154, 136367525), (175, 120003422), (245, 85716730), (275, 76365814), (350, 60001711), (385, 54547010), (490, 42858365), (539, 38962150), (550, 38182907), (557, 37703050), (770, 27273505), (1078, 19481075), (1114, 18851525), (1225, 17143346), (1399, 15011150), (1925, 10909402), (2450, 8571673), (2695, 7792430), (2785, 7540610), (2798, 7505575), (3850, 5454701), (3899, 5386150), (5390, 3896215), (5570, 3770305), (6127, 3427550), (6995, 3002230), (7798, 2693075), (9793, 2144450), (12254, 1713775), (13475, 1558486), (13925, 1508122), (13990, 1501115), (15389, 1364650), (19495, 1077230), (19586, 1072225), (26950, 779243), (27293, 769450), (27850, 754061), (30635, 685510), (30778, 682325), (34975, 600446), (38990, 538615), (42889, 489650), (48965, 428890), (54586, 384725), (61270, 342755), (68551, 306350), (69950, 300223), (76945, 272930), (85778, 244825), (97475, 215446), (97930, 214445), (107723, 194950), (136465, 153890), (137102, 153175)]