21000539950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1993}}^1$

素因数の和:2103

約数の個数: 144

約数和(自身を含む): 44795369520

約数和(自身を除く): 23794829570

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 43, 50, 58, 65, 86, 130, 145, 169, 215, 290, 325, 338, 377, 430, 559, 650, 725, 754, 845, 1075, 1118, 1247, 1450, 1690, 1885, 1993, 2150, 2494, 2795, 3770, 3986, 4225, 4901, 5590, 6235, 7267, 8450, 9425, 9802, 9965, 12470, 13975, 14534, 16211, 18850, 19930, 24505, 25909, 27950, 31175, 32422, 36335, 49010, 49825, 51818, 57797, 62350, 72670, 81055, 85699, 99650, 115594, 122525, 129545, 162110, 171398, 181675, 210743, 245050, 259090, 288985, 336817, 363350, 405275, 421486, 428495, 577970, 647725, 673634, 751361, 810550, 856990, 1053715, 1114087, 1295450, 1444925, 1502722, 1684085, 2107430, 2142475, 2228174, 2485271, 2889850, 3368170, 3756805, 4284950, 4970542, 5268575, 5570435, 7513610, 8420425, 9767693, 10537150, 11140870, 12426355, 14483131, 16840850, 18784025, 19535386, 24852710, 27852175, 28966262, 32308523, 37568050, 48838465, 55704350, 62131775, 64617046, 72415655, 97676930, 124263550, 144831310, 161542615, 244192325, 323085230, 362078275, 420010799, 488384650, 724156550, 807713075, 840021598, 1615426150, 2100053995, 4200107990, 10500269975, 21000539950]

約数ペア:

[(1, 21000539950), (2, 10500269975), (5, 4200107990), (10, 2100053995), (13, 1615426150), (25, 840021598), (26, 807713075), (29, 724156550), (43, 488384650), (50, 420010799), (58, 362078275), (65, 323085230), (86, 244192325), (130, 161542615), (145, 144831310), (169, 124263550), (215, 97676930), (290, 72415655), (325, 64617046), (338, 62131775), (377, 55704350), (430, 48838465), (559, 37568050), (650, 32308523), (725, 28966262), (754, 27852175), (845, 24852710), (1075, 19535386), (1118, 18784025), (1247, 16840850), (1450, 14483131), (1690, 12426355), (1885, 11140870), (1993, 10537150), (2150, 9767693), (2494, 8420425), (2795, 7513610), (3770, 5570435), (3986, 5268575), (4225, 4970542), (4901, 4284950), (5590, 3756805), (6235, 3368170), (7267, 2889850), (8450, 2485271), (9425, 2228174), (9802, 2142475), (9965, 2107430), (12470, 1684085), (13975, 1502722), (14534, 1444925), (16211, 1295450), (18850, 1114087), (19930, 1053715), (24505, 856990), (25909, 810550), (27950, 751361), (31175, 673634), (32422, 647725), (36335, 577970), (49010, 428495), (49825, 421486), (51818, 405275), (57797, 363350), (62350, 336817), (72670, 288985), (81055, 259090), (85699, 245050), (99650, 210743), (115594, 181675), (122525, 171398), (129545, 162110)]