31680220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:116

約数の個数: 144

約数和(自身を含む): 84460320

約数和(自身を除く): 52780100

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 53, 55, 65, 76, 95, 106, 110, 121, 130, 143, 190, 209, 212, 220, 242, 247, 260, 265, 286, 380, 418, 484, 494, 530, 572, 583, 605, 689, 715, 836, 988, 1007, 1045, 1060, 1166, 1210, 1235, 1378, 1430, 1573, 2014, 2090, 2299, 2332, 2420, 2470, 2717, 2756, 2860, 2915, 3146, 3445, 4028, 4180, 4598, 4940, 5035, 5434, 5830, 6292, 6413, 6890, 7579, 7865, 9196, 10070, 10868, 11077, 11495, 11660, 12826, 13091, 13585, 13780, 15158, 15730, 20140, 22154, 22990, 25652, 26182, 27170, 29887, 30316, 31460, 32065, 37895, 44308, 45980, 52364, 54340, 55385, 59774, 64130, 65455, 75790, 83369, 110770, 119548, 121847, 128260, 130910, 144001, 149435, 151580, 166738, 221540, 243694, 261820, 288002, 298870, 333476, 416845, 487388, 576004, 597740, 609235, 720005, 833690, 1218470, 1440010, 1584011, 1667380, 2436940, 2880020, 3168022, 6336044, 7920055, 15840110, 31680220]

約数ペア:

[(1, 31680220), (2, 15840110), (4, 7920055), (5, 6336044), (10, 3168022), (11, 2880020), (13, 2436940), (19, 1667380), (20, 1584011), (22, 1440010), (26, 1218470), (38, 833690), (44, 720005), (52, 609235), (53, 597740), (55, 576004), (65, 487388), (76, 416845), (95, 333476), (106, 298870), (110, 288002), (121, 261820), (130, 243694), (143, 221540), (190, 166738), (209, 151580), (212, 149435), (220, 144001), (242, 130910), (247, 128260), (260, 121847), (265, 119548), (286, 110770), (380, 83369), (418, 75790), (484, 65455), (494, 64130), (530, 59774), (572, 55385), (583, 54340), (605, 52364), (689, 45980), (715, 44308), (836, 37895), (988, 32065), (1007, 31460), (1045, 30316), (1060, 29887), (1166, 27170), (1210, 26182), (1235, 25652), (1378, 22990), (1430, 22154), (1573, 20140), (2014, 15730), (2090, 15158), (2299, 13780), (2332, 13585), (2420, 13091), (2470, 12826), (2717, 11660), (2756, 11495), (2860, 11077), (2915, 10868), (3146, 10070), (3445, 9196), (4028, 7865), (4180, 7579), (4598, 6890), (4940, 6413), (5035, 6292), (5434, 5830)]