19917882

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 44756712

約数和(自身を除く): 24838830

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 137, 197, 246, 274, 369, 394, 411, 591, 738, 822, 1182, 1233, 1773, 2466, 3546, 5617, 8077, 11234, 16154, 16851, 24231, 26989, 33702, 48462, 50553, 53978, 72693, 80967, 101106, 145386, 161934, 242901, 485802, 1106549, 2213098, 3319647, 6639294, 9958941, 19917882]

約数ペア:

[(1, 19917882), (2, 9958941), (3, 6639294), (6, 3319647), (9, 2213098), (18, 1106549), (41, 485802), (82, 242901), (123, 161934), (137, 145386), (197, 101106), (246, 80967), (274, 72693), (369, 53978), (394, 50553), (411, 48462), (591, 33702), (738, 26989), (822, 24231), (1182, 16851), (1233, 16154), (1773, 11234), (2466, 8077), (3546, 5617)]