21052304

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:808

約数の個数: 80

約数和(自身を含む): 52913280

約数和(自身を除く): 31860976

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 52, 56, 76, 91, 104, 112, 133, 152, 182, 208, 247, 266, 304, 364, 494, 532, 728, 761, 988, 1064, 1456, 1522, 1729, 1976, 2128, 3044, 3458, 3952, 5327, 6088, 6916, 9893, 10654, 12176, 13832, 14459, 19786, 21308, 27664, 28918, 39572, 42616, 57836, 69251, 79144, 85232, 101213, 115672, 138502, 158288, 187967, 202426, 231344, 277004, 375934, 404852, 554008, 751868, 809704, 1108016, 1315769, 1503736, 1619408, 2631538, 3007472, 5263076, 10526152, 21052304]

約数ペア:

[(1, 21052304), (2, 10526152), (4, 5263076), (7, 3007472), (8, 2631538), (13, 1619408), (14, 1503736), (16, 1315769), (19, 1108016), (26, 809704), (28, 751868), (38, 554008), (52, 404852), (56, 375934), (76, 277004), (91, 231344), (104, 202426), (112, 187967), (133, 158288), (152, 138502), (182, 115672), (208, 101213), (247, 85232), (266, 79144), (304, 69251), (364, 57836), (494, 42616), (532, 39572), (728, 28918), (761, 27664), (988, 21308), (1064, 19786), (1456, 14459), (1522, 13832), (1729, 12176), (1976, 10654), (2128, 9893), (3044, 6916), (3458, 6088), (3952, 5327)]