20157883905

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:571

約数の個数: 128

約数和(自身を含む): 36006405120

約数和(自身を除く): 15848521215

約数列:

[1, 3, 5, 15, 23, 29, 41, 69, 87, 115, 123, 145, 157, 205, 313, 345, 435, 471, 615, 667, 785, 939, 943, 1189, 1565, 2001, 2355, 2829, 3335, 3567, 3611, 4553, 4695, 4715, 5945, 6437, 7199, 9077, 10005, 10833, 12833, 13659, 14145, 17835, 18055, 19311, 21597, 22765, 27231, 27347, 32185, 35995, 38499, 45385, 49141, 54165, 64165, 68295, 82041, 96555, 104719, 107985, 136155, 136735, 147423, 148051, 186673, 192495, 208771, 245705, 295159, 314157, 372157, 410205, 444153, 523595, 560019, 626313, 737115, 740255, 885477, 933365, 1043855, 1116471, 1130243, 1425089, 1475795, 1570785, 1860785, 2014781, 2220765, 2800095, 3131565, 3390729, 4275267, 4293479, 4427385, 5582355, 5651215, 6044343, 7125445, 8559611, 10073905, 12880437, 16953645, 21376335, 21467395, 25678833, 30221715, 32777047, 42798055, 46339963, 58428649, 64402185, 98331141, 128394165, 139019889, 163885235, 175285947, 231699815, 292143245, 491655705, 695099445, 876429735, 1343858927, 4031576781, 6719294635, 20157883905]

約数ペア:

[(1, 20157883905), (3, 6719294635), (5, 4031576781), (15, 1343858927), (23, 876429735), (29, 695099445), (41, 491655705), (69, 292143245), (87, 231699815), (115, 175285947), (123, 163885235), (145, 139019889), (157, 128394165), (205, 98331141), (313, 64402185), (345, 58428649), (435, 46339963), (471, 42798055), (615, 32777047), (667, 30221715), (785, 25678833), (939, 21467395), (943, 21376335), (1189, 16953645), (1565, 12880437), (2001, 10073905), (2355, 8559611), (2829, 7125445), (3335, 6044343), (3567, 5651215), (3611, 5582355), (4553, 4427385), (4695, 4293479), (4715, 4275267), (5945, 3390729), (6437, 3131565), (7199, 2800095), (9077, 2220765), (10005, 2014781), (10833, 1860785), (12833, 1570785), (13659, 1475795), (14145, 1425089), (17835, 1130243), (18055, 1116471), (19311, 1043855), (21597, 933365), (22765, 885477), (27231, 740255), (27347, 737115), (32185, 626313), (35995, 560019), (38499, 523595), (45385, 444153), (49141, 410205), (54165, 372157), (64165, 314157), (68295, 295159), (82041, 245705), (96555, 208771), (104719, 192495), (107985, 186673), (136155, 148051), (136735, 147423)]