21403206

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:378

約数の個数: 72

約数和(自身を含む): 52782912

約数和(自身を除く): 31379706

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 31, 33, 62, 66, 93, 99, 121, 186, 198, 242, 279, 317, 341, 363, 558, 634, 682, 726, 951, 1023, 1089, 1902, 2046, 2178, 2853, 3069, 3487, 3751, 5706, 6138, 6974, 7502, 9827, 10461, 11253, 19654, 20922, 22506, 29481, 31383, 33759, 38357, 58962, 62766, 67518, 76714, 88443, 108097, 115071, 176886, 216194, 230142, 324291, 345213, 648582, 690426, 972873, 1189067, 1945746, 2378134, 3567201, 7134402, 10701603, 21403206]

約数ペア:

[(1, 21403206), (2, 10701603), (3, 7134402), (6, 3567201), (9, 2378134), (11, 1945746), (18, 1189067), (22, 972873), (31, 690426), (33, 648582), (62, 345213), (66, 324291), (93, 230142), (99, 216194), (121, 176886), (186, 115071), (198, 108097), (242, 88443), (279, 76714), (317, 67518), (341, 62766), (363, 58962), (558, 38357), (634, 33759), (682, 31383), (726, 29481), (951, 22506), (1023, 20922), (1089, 19654), (1902, 11253), (2046, 10461), (2178, 9827), (2853, 7502), (3069, 6974), (3487, 6138), (3751, 5706)]