19970325

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 39693888

約数和(自身を除く): 19723563

約数列:

[1, 3, 5, 9, 15, 17, 23, 25, 45, 51, 69, 75, 85, 115, 153, 207, 225, 227, 255, 345, 391, 425, 575, 681, 765, 1035, 1135, 1173, 1275, 1725, 1955, 2043, 3405, 3519, 3825, 3859, 5175, 5221, 5675, 5865, 9775, 10215, 11577, 15663, 17025, 17595, 19295, 26105, 29325, 34731, 46989, 51075, 57885, 78315, 87975, 88757, 96475, 130525, 173655, 234945, 266271, 289425, 391575, 443785, 798813, 868275, 1174725, 1331355, 2218925, 3994065, 6656775, 19970325]

約数ペア:

[(1, 19970325), (3, 6656775), (5, 3994065), (9, 2218925), (15, 1331355), (17, 1174725), (23, 868275), (25, 798813), (45, 443785), (51, 391575), (69, 289425), (75, 266271), (85, 234945), (115, 173655), (153, 130525), (207, 96475), (225, 88757), (227, 87975), (255, 78315), (345, 57885), (391, 51075), (425, 46989), (575, 34731), (681, 29325), (765, 26105), (1035, 19295), (1135, 17595), (1173, 17025), (1275, 15663), (1725, 11577), (1955, 10215), (2043, 9775), (3405, 5865), (3519, 5675), (3825, 5221), (3859, 5175)]