21052380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 63302400

約数和(自身を除く): 42250020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 59, 60, 76, 95, 114, 118, 177, 190, 228, 236, 285, 295, 313, 354, 380, 570, 590, 626, 708, 885, 939, 1121, 1140, 1180, 1252, 1565, 1770, 1878, 2242, 3130, 3363, 3540, 3756, 4484, 4695, 5605, 5947, 6260, 6726, 9390, 11210, 11894, 13452, 16815, 17841, 18467, 18780, 22420, 23788, 29735, 33630, 35682, 36934, 55401, 59470, 67260, 71364, 73868, 89205, 92335, 110802, 118940, 178410, 184670, 221604, 277005, 350873, 356820, 369340, 554010, 701746, 1052619, 1108020, 1403492, 1754365, 2105238, 3508730, 4210476, 5263095, 7017460, 10526190, 21052380]

約数ペア:

[(1, 21052380), (2, 10526190), (3, 7017460), (4, 5263095), (5, 4210476), (6, 3508730), (10, 2105238), (12, 1754365), (15, 1403492), (19, 1108020), (20, 1052619), (30, 701746), (38, 554010), (57, 369340), (59, 356820), (60, 350873), (76, 277005), (95, 221604), (114, 184670), (118, 178410), (177, 118940), (190, 110802), (228, 92335), (236, 89205), (285, 73868), (295, 71364), (313, 67260), (354, 59470), (380, 55401), (570, 36934), (590, 35682), (626, 33630), (708, 29735), (885, 23788), (939, 22420), (1121, 18780), (1140, 18467), (1180, 17841), (1252, 16815), (1565, 13452), (1770, 11894), (1878, 11210), (2242, 9390), (3130, 6726), (3363, 6260), (3540, 5947), (3756, 5605), (4484, 4695)]