21804640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{953}}^1$

素因数の和:992

約数の個数: 96

約数和(自身を含む): 60582816

約数和(自身を除く): 38778176

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 953, 1040, 1144, 1430, 1760, 1906, 2080, 2288, 2860, 3812, 4576, 4765, 5720, 7624, 9530, 10483, 11440, 12389, 15248, 19060, 20966, 22880, 24778, 30496, 38120, 41932, 49556, 52415, 61945, 76240, 83864, 99112, 104830, 123890, 136279, 152480, 167728, 198224, 209660, 247780, 272558, 335456, 396448, 419320, 495560, 545116, 681395, 838640, 991120, 1090232, 1362790, 1677280, 1982240, 2180464, 2725580, 4360928, 5451160, 10902320, 21804640]

約数ペア:

[(1, 21804640), (2, 10902320), (4, 5451160), (5, 4360928), (8, 2725580), (10, 2180464), (11, 1982240), (13, 1677280), (16, 1362790), (20, 1090232), (22, 991120), (26, 838640), (32, 681395), (40, 545116), (44, 495560), (52, 419320), (55, 396448), (65, 335456), (80, 272558), (88, 247780), (104, 209660), (110, 198224), (130, 167728), (143, 152480), (160, 136279), (176, 123890), (208, 104830), (220, 99112), (260, 83864), (286, 76240), (352, 61945), (416, 52415), (440, 49556), (520, 41932), (572, 38120), (715, 30496), (880, 24778), (953, 22880), (1040, 20966), (1144, 19060), (1430, 15248), (1760, 12389), (1906, 11440), (2080, 10483), (2288, 9530), (2860, 7624), (3812, 5720), (4576, 4765)]