19876890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 56401920

約数和(自身を除く): 36525030

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 29, 30, 31, 33, 55, 58, 62, 66, 67, 87, 93, 110, 134, 145, 155, 165, 174, 186, 201, 290, 310, 319, 330, 335, 341, 402, 435, 465, 638, 670, 682, 737, 870, 899, 930, 957, 1005, 1023, 1474, 1595, 1705, 1798, 1914, 1943, 2010, 2046, 2077, 2211, 2697, 3190, 3410, 3685, 3886, 4154, 4422, 4495, 4785, 5115, 5394, 5829, 6231, 7370, 8990, 9570, 9715, 9889, 10230, 10385, 11055, 11658, 12462, 13485, 19430, 19778, 20770, 21373, 22110, 22847, 26970, 29145, 29667, 31155, 42746, 45694, 49445, 58290, 59334, 60233, 62310, 64119, 68541, 98890, 106865, 114235, 120466, 128238, 137082, 148335, 180699, 213730, 228470, 296670, 301165, 320595, 342705, 361398, 602330, 641190, 662563, 685410, 903495, 1325126, 1806990, 1987689, 3312815, 3975378, 6625630, 9938445, 19876890]

約数ペア:

[(1, 19876890), (2, 9938445), (3, 6625630), (5, 3975378), (6, 3312815), (10, 1987689), (11, 1806990), (15, 1325126), (22, 903495), (29, 685410), (30, 662563), (31, 641190), (33, 602330), (55, 361398), (58, 342705), (62, 320595), (66, 301165), (67, 296670), (87, 228470), (93, 213730), (110, 180699), (134, 148335), (145, 137082), (155, 128238), (165, 120466), (174, 114235), (186, 106865), (201, 98890), (290, 68541), (310, 64119), (319, 62310), (330, 60233), (335, 59334), (341, 58290), (402, 49445), (435, 45694), (465, 42746), (638, 31155), (670, 29667), (682, 29145), (737, 26970), (870, 22847), (899, 22110), (930, 21373), (957, 20770), (1005, 19778), (1023, 19430), (1474, 13485), (1595, 12462), (1705, 11658), (1798, 11055), (1914, 10385), (1943, 10230), (2010, 9889), (2046, 9715), (2077, 9570), (2211, 8990), (2697, 7370), (3190, 6231), (3410, 5829), (3685, 5394), (3886, 5115), (4154, 4785), (4422, 4495)]