19506990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1663}}^1$

素因数の和:1713

約数の個数: 64

約数和(自身を含む): 51757056

約数和(自身を除く): 32250066

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1663, 1955, 2346, 3326, 3910, 4989, 5865, 8315, 9978, 11730, 16630, 24945, 28271, 38249, 49890, 56542, 76498, 84813, 114747, 141355, 169626, 191245, 229494, 282710, 382490, 424065, 573735, 650233, 848130, 1147470, 1300466, 1950699, 3251165, 3901398, 6502330, 9753495, 19506990]

約数ペア:

[(1, 19506990), (2, 9753495), (3, 6502330), (5, 3901398), (6, 3251165), (10, 1950699), (15, 1300466), (17, 1147470), (23, 848130), (30, 650233), (34, 573735), (46, 424065), (51, 382490), (69, 282710), (85, 229494), (102, 191245), (115, 169626), (138, 141355), (170, 114747), (230, 84813), (255, 76498), (345, 56542), (391, 49890), (510, 38249), (690, 28271), (782, 24945), (1173, 16630), (1663, 11730), (1955, 9978), (2346, 8315), (3326, 5865), (3910, 4989)]