218540980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{829}}^1$

素因数の和:1121

約数の個数: 72

約数和(自身を含む): 536495400

約数和(自身を除く): 317954420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 269, 490, 538, 829, 980, 1076, 1345, 1658, 1883, 2690, 3316, 3766, 4145, 5380, 5803, 7532, 8290, 9415, 11606, 13181, 16580, 18830, 23212, 26362, 29015, 37660, 40621, 52724, 58030, 65905, 81242, 116060, 131810, 162484, 203105, 223001, 263620, 406210, 446002, 812420, 892004, 1115005, 1561007, 2230010, 3122014, 4460020, 6244028, 7805035, 10927049, 15610070, 21854098, 31220140, 43708196, 54635245, 109270490, 218540980]

約数ペア:

[(1, 218540980), (2, 109270490), (4, 54635245), (5, 43708196), (7, 31220140), (10, 21854098), (14, 15610070), (20, 10927049), (28, 7805035), (35, 6244028), (49, 4460020), (70, 3122014), (98, 2230010), (140, 1561007), (196, 1115005), (245, 892004), (269, 812420), (490, 446002), (538, 406210), (829, 263620), (980, 223001), (1076, 203105), (1345, 162484), (1658, 131810), (1883, 116060), (2690, 81242), (3316, 65905), (3766, 58030), (4145, 52724), (5380, 40621), (5803, 37660), (7532, 29015), (8290, 26362), (9415, 23212), (11606, 18830), (13181, 16580)]