72171880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 190512000

約数和(自身を除く): 118340120

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 89, 95, 97, 110, 152, 178, 190, 194, 209, 220, 356, 380, 388, 418, 440, 445, 485, 712, 760, 776, 836, 890, 970, 979, 1045, 1067, 1672, 1691, 1780, 1843, 1940, 1958, 2090, 2134, 3382, 3560, 3686, 3880, 3916, 4180, 4268, 4895, 5335, 6764, 7372, 7832, 8360, 8455, 8536, 8633, 9215, 9790, 10670, 13528, 14744, 16910, 17266, 18430, 18601, 19580, 20273, 21340, 33820, 34532, 36860, 37202, 39160, 40546, 42680, 43165, 67640, 69064, 73720, 74404, 81092, 86330, 93005, 94963, 101365, 148808, 162184, 164027, 172660, 186010, 189926, 202730, 328054, 345320, 372020, 379852, 405460, 474815, 656108, 744040, 759704, 810920, 820135, 949630, 1312216, 1640270, 1804297, 1899260, 3280540, 3608594, 3798520, 6561080, 7217188, 9021485, 14434376, 18042970, 36085940, 72171880]

約数ペア:

[(1, 72171880), (2, 36085940), (4, 18042970), (5, 14434376), (8, 9021485), (10, 7217188), (11, 6561080), (19, 3798520), (20, 3608594), (22, 3280540), (38, 1899260), (40, 1804297), (44, 1640270), (55, 1312216), (76, 949630), (88, 820135), (89, 810920), (95, 759704), (97, 744040), (110, 656108), (152, 474815), (178, 405460), (190, 379852), (194, 372020), (209, 345320), (220, 328054), (356, 202730), (380, 189926), (388, 186010), (418, 172660), (440, 164027), (445, 162184), (485, 148808), (712, 101365), (760, 94963), (776, 93005), (836, 86330), (890, 81092), (970, 74404), (979, 73720), (1045, 69064), (1067, 67640), (1672, 43165), (1691, 42680), (1780, 40546), (1843, 39160), (1940, 37202), (1958, 36860), (2090, 34532), (2134, 33820), (3382, 21340), (3560, 20273), (3686, 19580), (3880, 18601), (3916, 18430), (4180, 17266), (4268, 16910), (4895, 14744), (5335, 13528), (6764, 10670), (7372, 9790), (7832, 9215), (8360, 8633), (8455, 8536)]