638492720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{11353}}^1$

素因数の和:11422

約数の個数: 80

約数和(自身を含む): 1605001440

約数和(自身を除く): 966508720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 370, 380, 592, 703, 740, 760, 1406, 1480, 1520, 2812, 2960, 3515, 5624, 7030, 11248, 11353, 14060, 22706, 28120, 45412, 56240, 56765, 90824, 113530, 181648, 215707, 227060, 420061, 431414, 454120, 840122, 862828, 908240, 1078535, 1680244, 1725656, 2100305, 2157070, 3360488, 3451312, 4200610, 4314140, 6720976, 7981159, 8401220, 8628280, 15962318, 16802440, 17256560, 31924636, 33604880, 39905795, 63849272, 79811590, 127698544, 159623180, 319246360, 638492720]

約数ペア:

[(1, 638492720), (2, 319246360), (4, 159623180), (5, 127698544), (8, 79811590), (10, 63849272), (16, 39905795), (19, 33604880), (20, 31924636), (37, 17256560), (38, 16802440), (40, 15962318), (74, 8628280), (76, 8401220), (80, 7981159), (95, 6720976), (148, 4314140), (152, 4200610), (185, 3451312), (190, 3360488), (296, 2157070), (304, 2100305), (370, 1725656), (380, 1680244), (592, 1078535), (703, 908240), (740, 862828), (760, 840122), (1406, 454120), (1480, 431414), (1520, 420061), (2812, 227060), (2960, 215707), (3515, 181648), (5624, 113530), (7030, 90824), (11248, 56765), (11353, 56240), (14060, 45412), (22706, 28120)]