19777380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{31}}^2$

素因数の和:95

約数の個数: 144

約数和(自身を含む): 66729600

約数和(自身を除く): 46952220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 343, 372, 420, 434, 465, 490, 588, 620, 651, 686, 735, 868, 930, 961, 980, 1029, 1085, 1302, 1372, 1470, 1519, 1715, 1860, 1922, 2058, 2170, 2604, 2883, 2940, 3038, 3255, 3430, 3844, 4116, 4340, 4557, 4805, 5145, 5766, 6076, 6510, 6727, 6860, 7595, 9114, 9610, 10290, 10633, 11532, 13020, 13454, 14415, 15190, 18228, 19220, 20181, 20580, 21266, 22785, 26908, 28830, 30380, 31899, 33635, 40362, 42532, 45570, 47089, 53165, 57660, 63798, 67270, 80724, 91140, 94178, 100905, 106330, 127596, 134540, 141267, 159495, 188356, 201810, 212660, 235445, 282534, 318990, 329623, 403620, 470890, 565068, 637980, 659246, 706335, 941780, 988869, 1318492, 1412670, 1648115, 1977738, 2825340, 3296230, 3955476, 4944345, 6592460, 9888690, 19777380]

約数ペア:

[(1, 19777380), (2, 9888690), (3, 6592460), (4, 4944345), (5, 3955476), (6, 3296230), (7, 2825340), (10, 1977738), (12, 1648115), (14, 1412670), (15, 1318492), (20, 988869), (21, 941780), (28, 706335), (30, 659246), (31, 637980), (35, 565068), (42, 470890), (49, 403620), (60, 329623), (62, 318990), (70, 282534), (84, 235445), (93, 212660), (98, 201810), (105, 188356), (124, 159495), (140, 141267), (147, 134540), (155, 127596), (186, 106330), (196, 100905), (210, 94178), (217, 91140), (245, 80724), (294, 67270), (310, 63798), (343, 57660), (372, 53165), (420, 47089), (434, 45570), (465, 42532), (490, 40362), (588, 33635), (620, 31899), (651, 30380), (686, 28830), (735, 26908), (868, 22785), (930, 21266), (961, 20580), (980, 20181), (1029, 19220), (1085, 18228), (1302, 15190), (1372, 14415), (1470, 13454), (1519, 13020), (1715, 11532), (1860, 10633), (1922, 10290), (2058, 9610), (2170, 9114), (2604, 7595), (2883, 6860), (2940, 6727), (3038, 6510), (3255, 6076), (3430, 5766), (3844, 5145), (4116, 4805), (4340, 4557)]