28156380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 93806496

約数和(自身を除く): 65650116

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 61, 70, 84, 98, 105, 122, 140, 147, 157, 183, 196, 210, 244, 245, 294, 305, 314, 366, 420, 427, 471, 490, 588, 610, 628, 732, 735, 785, 854, 915, 942, 980, 1099, 1220, 1281, 1470, 1570, 1708, 1830, 1884, 2135, 2198, 2355, 2562, 2940, 2989, 3140, 3297, 3660, 4270, 4396, 4710, 5124, 5495, 5978, 6405, 6594, 7693, 8540, 8967, 9420, 9577, 10990, 11956, 12810, 13188, 14945, 15386, 16485, 17934, 19154, 21980, 23079, 25620, 28731, 29890, 30772, 32970, 35868, 38308, 38465, 44835, 46158, 47885, 57462, 59780, 65940, 67039, 76930, 89670, 92316, 95770, 114924, 115395, 134078, 143655, 153860, 179340, 191540, 201117, 230790, 268156, 287310, 335195, 402234, 461580, 469273, 574620, 670390, 804468, 938546, 1005585, 1340780, 1407819, 1877092, 2011170, 2346365, 2815638, 4022340, 4692730, 5631276, 7039095, 9385460, 14078190, 28156380]

約数ペア:

[(1, 28156380), (2, 14078190), (3, 9385460), (4, 7039095), (5, 5631276), (6, 4692730), (7, 4022340), (10, 2815638), (12, 2346365), (14, 2011170), (15, 1877092), (20, 1407819), (21, 1340780), (28, 1005585), (30, 938546), (35, 804468), (42, 670390), (49, 574620), (60, 469273), (61, 461580), (70, 402234), (84, 335195), (98, 287310), (105, 268156), (122, 230790), (140, 201117), (147, 191540), (157, 179340), (183, 153860), (196, 143655), (210, 134078), (244, 115395), (245, 114924), (294, 95770), (305, 92316), (314, 89670), (366, 76930), (420, 67039), (427, 65940), (471, 59780), (490, 57462), (588, 47885), (610, 46158), (628, 44835), (732, 38465), (735, 38308), (785, 35868), (854, 32970), (915, 30772), (942, 29890), (980, 28731), (1099, 25620), (1220, 23079), (1281, 21980), (1470, 19154), (1570, 17934), (1708, 16485), (1830, 15386), (1884, 14945), (2135, 13188), (2198, 12810), (2355, 11956), (2562, 10990), (2940, 9577), (2989, 9420), (3140, 8967), (3297, 8540), (3660, 7693), (4270, 6594), (4396, 6405), (4710, 5978), (5124, 5495)]