21348430

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 41776560

約数和(自身を除く): 20428130

約数列:

[1, 2, 5, 10, 17, 34, 83, 85, 89, 166, 170, 178, 289, 415, 445, 578, 830, 890, 1411, 1445, 1513, 2822, 2890, 3026, 7055, 7387, 7565, 14110, 14774, 15130, 23987, 25721, 36935, 47974, 51442, 73870, 119935, 125579, 128605, 239870, 251158, 257210, 627895, 1255790, 2134843, 4269686, 10674215, 21348430]

約数ペア:

[(1, 21348430), (2, 10674215), (5, 4269686), (10, 2134843), (17, 1255790), (34, 627895), (83, 257210), (85, 251158), (89, 239870), (166, 128605), (170, 125579), (178, 119935), (289, 73870), (415, 51442), (445, 47974), (578, 36935), (830, 25721), (890, 23987), (1411, 15130), (1445, 14774), (1513, 14110), (2822, 7565), (2890, 7387), (3026, 7055)]