19760020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 50964480

約数和(自身を除く): 31204460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 31, 35, 58, 62, 70, 116, 124, 140, 145, 155, 157, 203, 217, 290, 310, 314, 406, 434, 580, 620, 628, 785, 812, 868, 899, 1015, 1085, 1099, 1570, 1798, 2030, 2170, 2198, 3140, 3596, 4060, 4340, 4396, 4495, 4553, 4867, 5495, 6293, 8990, 9106, 9734, 10990, 12586, 17980, 18212, 19468, 21980, 22765, 24335, 25172, 31465, 31871, 34069, 45530, 48670, 62930, 63742, 68138, 91060, 97340, 125860, 127484, 136276, 141143, 159355, 170345, 282286, 318710, 340690, 564572, 637420, 681380, 705715, 988001, 1411430, 1976002, 2822860, 3952004, 4940005, 9880010, 19760020]

約数ペア:

[(1, 19760020), (2, 9880010), (4, 4940005), (5, 3952004), (7, 2822860), (10, 1976002), (14, 1411430), (20, 988001), (28, 705715), (29, 681380), (31, 637420), (35, 564572), (58, 340690), (62, 318710), (70, 282286), (116, 170345), (124, 159355), (140, 141143), (145, 136276), (155, 127484), (157, 125860), (203, 97340), (217, 91060), (290, 68138), (310, 63742), (314, 62930), (406, 48670), (434, 45530), (580, 34069), (620, 31871), (628, 31465), (785, 25172), (812, 24335), (868, 22765), (899, 21980), (1015, 19468), (1085, 18212), (1099, 17980), (1570, 12586), (1798, 10990), (2030, 9734), (2170, 9106), (2198, 8990), (3140, 6293), (3596, 5495), (4060, 4867), (4340, 4553), (4396, 4495)]