21777420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2729}}^1$

素因数の和:2767

約数の個数: 96

約数和(自身を含む): 73382400

約数和(自身を除く): 51604980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 2729, 3990, 5458, 7980, 8187, 10916, 13645, 16374, 19103, 27290, 32748, 38206, 40935, 51851, 54580, 57309, 76412, 81870, 95515, 103702, 114618, 155553, 163740, 191030, 207404, 229236, 259255, 286545, 311106, 362957, 382060, 518510, 573090, 622212, 725914, 777765, 1037020, 1088871, 1146180, 1451828, 1555530, 1814785, 2177742, 3111060, 3629570, 4355484, 5444355, 7259140, 10888710, 21777420]

約数ペア:

[(1, 21777420), (2, 10888710), (3, 7259140), (4, 5444355), (5, 4355484), (6, 3629570), (7, 3111060), (10, 2177742), (12, 1814785), (14, 1555530), (15, 1451828), (19, 1146180), (20, 1088871), (21, 1037020), (28, 777765), (30, 725914), (35, 622212), (38, 573090), (42, 518510), (57, 382060), (60, 362957), (70, 311106), (76, 286545), (84, 259255), (95, 229236), (105, 207404), (114, 191030), (133, 163740), (140, 155553), (190, 114618), (210, 103702), (228, 95515), (266, 81870), (285, 76412), (380, 57309), (399, 54580), (420, 51851), (532, 40935), (570, 38206), (665, 32748), (798, 27290), (1140, 19103), (1330, 16374), (1596, 13645), (1995, 10916), (2660, 8187), (2729, 7980), (3990, 5458)]