21192220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:323

約数の個数: 96

約数和(自身を含む): 55480320

約数和(自身を除く): 34288100

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 62, 70, 76, 95, 124, 133, 140, 155, 190, 217, 257, 266, 310, 380, 434, 514, 532, 589, 620, 665, 868, 1028, 1085, 1178, 1285, 1330, 1799, 2170, 2356, 2570, 2660, 2945, 3598, 4123, 4340, 4883, 5140, 5890, 7196, 7967, 8246, 8995, 9766, 11780, 15934, 16492, 17990, 19532, 20615, 24415, 31868, 34181, 35980, 39835, 41230, 48830, 55769, 68362, 79670, 82460, 97660, 111538, 136724, 151373, 159340, 170905, 223076, 278845, 302746, 341810, 557690, 605492, 683620, 756865, 1059611, 1115380, 1513730, 2119222, 3027460, 4238444, 5298055, 10596110, 21192220]

約数ペア:

[(1, 21192220), (2, 10596110), (4, 5298055), (5, 4238444), (7, 3027460), (10, 2119222), (14, 1513730), (19, 1115380), (20, 1059611), (28, 756865), (31, 683620), (35, 605492), (38, 557690), (62, 341810), (70, 302746), (76, 278845), (95, 223076), (124, 170905), (133, 159340), (140, 151373), (155, 136724), (190, 111538), (217, 97660), (257, 82460), (266, 79670), (310, 68362), (380, 55769), (434, 48830), (514, 41230), (532, 39835), (589, 35980), (620, 34181), (665, 31868), (868, 24415), (1028, 20615), (1085, 19532), (1178, 17990), (1285, 16492), (1330, 15934), (1799, 11780), (2170, 9766), (2356, 8995), (2570, 8246), (2660, 7967), (2945, 7196), (3598, 5890), (4123, 5140), (4340, 4883)]