200040020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:749

約数の個数: 72

約数和(自身を含む): 455364504

約数和(自身を除く): 255324484

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 289, 340, 530, 578, 653, 901, 1060, 1156, 1306, 1445, 1802, 2612, 2890, 3265, 3604, 4505, 5780, 6530, 9010, 11101, 13060, 15317, 18020, 22202, 30634, 34609, 44404, 55505, 61268, 69218, 76585, 111010, 138436, 153170, 173045, 188717, 222020, 306340, 346090, 377434, 588353, 692180, 754868, 943585, 1176706, 1887170, 2353412, 2941765, 3774340, 5883530, 10002001, 11767060, 20004002, 40008004, 50010005, 100020010, 200040020]

約数ペア:

[(1, 200040020), (2, 100020010), (4, 50010005), (5, 40008004), (10, 20004002), (17, 11767060), (20, 10002001), (34, 5883530), (53, 3774340), (68, 2941765), (85, 2353412), (106, 1887170), (170, 1176706), (212, 943585), (265, 754868), (289, 692180), (340, 588353), (530, 377434), (578, 346090), (653, 306340), (901, 222020), (1060, 188717), (1156, 173045), (1306, 153170), (1445, 138436), (1802, 111010), (2612, 76585), (2890, 69218), (3265, 61268), (3604, 55505), (4505, 44404), (5780, 34609), (6530, 30634), (9010, 22202), (11101, 18020), (13060, 15317)]