20165493820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1\times {\mathrm{6761}}^1$

素因数の和:7003

約数の個数: 96

約数和(自身を含む): 45804165120

約数和(自身を除く): 25638671300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 167, 188, 190, 235, 334, 380, 470, 668, 835, 893, 940, 1670, 1786, 3173, 3340, 3572, 4465, 6346, 6761, 7849, 8930, 12692, 13522, 15698, 15865, 17860, 27044, 31396, 31730, 33805, 39245, 63460, 67610, 78490, 128459, 135220, 149131, 156980, 256918, 298262, 317767, 513836, 596524, 635534, 642295, 745655, 1129087, 1271068, 1284590, 1491310, 1588835, 2258174, 2569180, 2982620, 3177670, 4516348, 5645435, 6037573, 6355340, 11290870, 12075146, 21452653, 22581740, 24150292, 30187865, 42905306, 53067089, 60375730, 85810612, 106134178, 107263265, 120751460, 212268356, 214526530, 265335445, 429053060, 530670890, 1008274691, 1061341780, 2016549382, 4033098764, 5041373455, 10082746910, 20165493820]

約数ペア:

[(1, 20165493820), (2, 10082746910), (4, 5041373455), (5, 4033098764), (10, 2016549382), (19, 1061341780), (20, 1008274691), (38, 530670890), (47, 429053060), (76, 265335445), (94, 214526530), (95, 212268356), (167, 120751460), (188, 107263265), (190, 106134178), (235, 85810612), (334, 60375730), (380, 53067089), (470, 42905306), (668, 30187865), (835, 24150292), (893, 22581740), (940, 21452653), (1670, 12075146), (1786, 11290870), (3173, 6355340), (3340, 6037573), (3572, 5645435), (4465, 4516348), (6346, 3177670), (6761, 2982620), (7849, 2569180), (8930, 2258174), (12692, 1588835), (13522, 1491310), (15698, 1284590), (15865, 1271068), (17860, 1129087), (27044, 745655), (31396, 642295), (31730, 635534), (33805, 596524), (39245, 513836), (63460, 317767), (67610, 298262), (78490, 256918), (128459, 156980), (135220, 149131)]