19908045

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 17693235

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 67, 71, 93, 135, 155, 201, 213, 279, 335, 355, 465, 603, 639, 837, 1005, 1065, 1395, 1809, 1917, 2077, 2201, 3015, 3195, 4185, 4757, 6231, 6603, 9045, 9585, 10385, 11005, 14271, 18693, 19809, 23785, 31155, 33015, 42813, 56079, 59427, 71355, 93465, 99045, 128439, 147467, 214065, 280395, 297135, 442401, 642195, 737335, 1327203, 2212005, 3981609, 6636015, 19908045]

約数ペア:

[(1, 19908045), (3, 6636015), (5, 3981609), (9, 2212005), (15, 1327203), (27, 737335), (31, 642195), (45, 442401), (67, 297135), (71, 280395), (93, 214065), (135, 147467), (155, 128439), (201, 99045), (213, 93465), (279, 71355), (335, 59427), (355, 56079), (465, 42813), (603, 33015), (639, 31155), (837, 23785), (1005, 19809), (1065, 18693), (1395, 14271), (1809, 11005), (1917, 10385), (2077, 9585), (2201, 9045), (3015, 6603), (3195, 6231), (4185, 4757)]