21669220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 50750784

約数和(自身を除く): 29081564

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 163, 170, 230, 289, 326, 340, 391, 460, 578, 652, 782, 815, 1156, 1445, 1564, 1630, 1955, 2771, 2890, 3260, 3749, 3910, 5542, 5780, 6647, 7498, 7820, 11084, 13294, 13855, 14996, 18745, 26588, 27710, 33235, 37490, 47107, 55420, 63733, 66470, 74980, 94214, 127466, 132940, 188428, 235535, 254932, 318665, 471070, 637330, 942140, 1083461, 1274660, 2166922, 4333844, 5417305, 10834610, 21669220]

約数ペア:

[(1, 21669220), (2, 10834610), (4, 5417305), (5, 4333844), (10, 2166922), (17, 1274660), (20, 1083461), (23, 942140), (34, 637330), (46, 471070), (68, 318665), (85, 254932), (92, 235535), (115, 188428), (163, 132940), (170, 127466), (230, 94214), (289, 74980), (326, 66470), (340, 63733), (391, 55420), (460, 47107), (578, 37490), (652, 33235), (782, 27710), (815, 26588), (1156, 18745), (1445, 14996), (1564, 13855), (1630, 13294), (1955, 11084), (2771, 7820), (2890, 7498), (3260, 6647), (3749, 5780), (3910, 5542)]