21591752

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 53625600

約数和(自身を除く): 32033848

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 49, 52, 56, 76, 91, 98, 104, 133, 152, 182, 196, 223, 247, 266, 364, 392, 446, 494, 532, 637, 728, 892, 931, 988, 1064, 1274, 1561, 1729, 1784, 1862, 1976, 2548, 2899, 3122, 3458, 3724, 4237, 5096, 5798, 6244, 6916, 7448, 8474, 10927, 11596, 12103, 12488, 13832, 16948, 20293, 21854, 23192, 24206, 29659, 33896, 40586, 43708, 48412, 55081, 59318, 81172, 87416, 96824, 110162, 118636, 142051, 162344, 207613, 220324, 237272, 284102, 385567, 415226, 440648, 568204, 771134, 830452, 1136408, 1542268, 1660904, 2698969, 3084536, 5397938, 10795876, 21591752]

約数ペア:

[(1, 21591752), (2, 10795876), (4, 5397938), (7, 3084536), (8, 2698969), (13, 1660904), (14, 1542268), (19, 1136408), (26, 830452), (28, 771134), (38, 568204), (49, 440648), (52, 415226), (56, 385567), (76, 284102), (91, 237272), (98, 220324), (104, 207613), (133, 162344), (152, 142051), (182, 118636), (196, 110162), (223, 96824), (247, 87416), (266, 81172), (364, 59318), (392, 55081), (446, 48412), (494, 43708), (532, 40586), (637, 33896), (728, 29659), (892, 24206), (931, 23192), (988, 21854), (1064, 20293), (1274, 16948), (1561, 13832), (1729, 12488), (1784, 12103), (1862, 11596), (1976, 10927), (2548, 8474), (2899, 7448), (3122, 6916), (3458, 6244), (3724, 5798), (4237, 5096)]