18661648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 42318720

約数和(自身を除く): 23657072

約数列:

[1, 2, 4, 8, 16, 17, 19, 23, 34, 38, 46, 68, 76, 92, 136, 152, 157, 184, 272, 304, 314, 323, 368, 391, 437, 628, 646, 782, 874, 1256, 1292, 1564, 1748, 2512, 2584, 2669, 2983, 3128, 3496, 3611, 5168, 5338, 5966, 6256, 6992, 7222, 7429, 10676, 11932, 14444, 14858, 21352, 23864, 28888, 29716, 42704, 47728, 50711, 57776, 59432, 61387, 68609, 101422, 118864, 122774, 137218, 202844, 245548, 274436, 405688, 491096, 548872, 811376, 982192, 1097744, 1166353, 2332706, 4665412, 9330824, 18661648]

約数ペア:

[(1, 18661648), (2, 9330824), (4, 4665412), (8, 2332706), (16, 1166353), (17, 1097744), (19, 982192), (23, 811376), (34, 548872), (38, 491096), (46, 405688), (68, 274436), (76, 245548), (92, 202844), (136, 137218), (152, 122774), (157, 118864), (184, 101422), (272, 68609), (304, 61387), (314, 59432), (323, 57776), (368, 50711), (391, 47728), (437, 42704), (628, 29716), (646, 28888), (782, 23864), (874, 21352), (1256, 14858), (1292, 14444), (1564, 11932), (1748, 10676), (2512, 7429), (2584, 7222), (2669, 6992), (2983, 6256), (3128, 5966), (3496, 5338), (3611, 5168)]