21721167460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1544891}}^1$

素因数の和:1544956

約数の個数: 48

約数和(自身を含む): 49312952640

約数和(自身を除く): 27591785180

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 2812, 3515, 7030, 14060, 1544891, 3089782, 6179564, 7724455, 15448910, 29352929, 30897820, 57160967, 58705858, 114321934, 117411716, 146764645, 228643868, 285804835, 293529290, 571609670, 587058580, 1086058373, 1143219340, 2172116746, 4344233492, 5430291865, 10860583730, 21721167460]

約数ペア:

[(1, 21721167460), (2, 10860583730), (4, 5430291865), (5, 4344233492), (10, 2172116746), (19, 1143219340), (20, 1086058373), (37, 587058580), (38, 571609670), (74, 293529290), (76, 285804835), (95, 228643868), (148, 146764645), (185, 117411716), (190, 114321934), (370, 58705858), (380, 57160967), (703, 30897820), (740, 29352929), (1406, 15448910), (2812, 7724455), (3515, 6179564), (7030, 3089782), (14060, 1544891)]