28396340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 71850240

約数和(自身を除く): 43453900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 53, 70, 86, 89, 106, 140, 172, 178, 212, 215, 265, 301, 356, 371, 430, 445, 530, 602, 623, 742, 860, 890, 1060, 1204, 1246, 1484, 1505, 1780, 1855, 2279, 2492, 3010, 3115, 3710, 3827, 4558, 4717, 6020, 6230, 7420, 7654, 9116, 9434, 11395, 12460, 15308, 15953, 18868, 19135, 22790, 23585, 26789, 31906, 33019, 38270, 45580, 47170, 53578, 63812, 66038, 76540, 79765, 94340, 107156, 132076, 133945, 159530, 165095, 202831, 267890, 319060, 330190, 405662, 535780, 660380, 811324, 1014155, 1419817, 2028310, 2839634, 4056620, 5679268, 7099085, 14198170, 28396340]

約数ペア:

[(1, 28396340), (2, 14198170), (4, 7099085), (5, 5679268), (7, 4056620), (10, 2839634), (14, 2028310), (20, 1419817), (28, 1014155), (35, 811324), (43, 660380), (53, 535780), (70, 405662), (86, 330190), (89, 319060), (106, 267890), (140, 202831), (172, 165095), (178, 159530), (212, 133945), (215, 132076), (265, 107156), (301, 94340), (356, 79765), (371, 76540), (430, 66038), (445, 63812), (530, 53578), (602, 47170), (623, 45580), (742, 38270), (860, 33019), (890, 31906), (1060, 26789), (1204, 23585), (1246, 22790), (1484, 19135), (1505, 18868), (1780, 15953), (1855, 15308), (2279, 12460), (2492, 11395), (3010, 9434), (3115, 9116), (3710, 7654), (3827, 7420), (4558, 6230), (4717, 6020)]