28555380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:326

約数の個数: 144

約数和(自身を含む): 100324224

約数和(自身を除く): 71768844

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 131, 140, 173, 180, 210, 252, 262, 315, 346, 393, 420, 519, 524, 630, 655, 692, 786, 865, 917, 1038, 1179, 1211, 1260, 1310, 1557, 1572, 1730, 1834, 1965, 2076, 2358, 2422, 2595, 2620, 2751, 3114, 3460, 3633, 3668, 3930, 4585, 4716, 4844, 5190, 5502, 5895, 6055, 6228, 7266, 7785, 7860, 8253, 9170, 10380, 10899, 11004, 11790, 12110, 13755, 14532, 15570, 16506, 18165, 18340, 21798, 22663, 23580, 24220, 27510, 31140, 33012, 36330, 41265, 43596, 45326, 54495, 55020, 67989, 72660, 82530, 90652, 108990, 113315, 135978, 158641, 165060, 203967, 217980, 226630, 271956, 317282, 339945, 407934, 453260, 475923, 634564, 679890, 793205, 815868, 951846, 1019835, 1359780, 1427769, 1586410, 1903692, 2039670, 2379615, 2855538, 3172820, 4079340, 4759230, 5711076, 7138845, 9518460, 14277690, 28555380]

約数ペア:

[(1, 28555380), (2, 14277690), (3, 9518460), (4, 7138845), (5, 5711076), (6, 4759230), (7, 4079340), (9, 3172820), (10, 2855538), (12, 2379615), (14, 2039670), (15, 1903692), (18, 1586410), (20, 1427769), (21, 1359780), (28, 1019835), (30, 951846), (35, 815868), (36, 793205), (42, 679890), (45, 634564), (60, 475923), (63, 453260), (70, 407934), (84, 339945), (90, 317282), (105, 271956), (126, 226630), (131, 217980), (140, 203967), (173, 165060), (180, 158641), (210, 135978), (252, 113315), (262, 108990), (315, 90652), (346, 82530), (393, 72660), (420, 67989), (519, 55020), (524, 54495), (630, 45326), (655, 43596), (692, 41265), (786, 36330), (865, 33012), (917, 31140), (1038, 27510), (1179, 24220), (1211, 23580), (1260, 22663), (1310, 21798), (1557, 18340), (1572, 18165), (1730, 16506), (1834, 15570), (1965, 14532), (2076, 13755), (2358, 12110), (2422, 11790), (2595, 11004), (2620, 10899), (2751, 10380), (3114, 9170), (3460, 8253), (3633, 7860), (3668, 7785), (3930, 7266), (4585, 6228), (4716, 6055), (4844, 5895), (5190, 5502)]