19761560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:181

約数の個数: 128

約数和(自身を含む): 56246400

約数和(自身を除く): 36484840

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 61, 65, 70, 89, 91, 104, 122, 130, 140, 178, 182, 244, 260, 280, 305, 356, 364, 427, 445, 455, 488, 520, 610, 623, 712, 728, 793, 854, 890, 910, 1157, 1220, 1246, 1586, 1708, 1780, 1820, 2135, 2314, 2440, 2492, 3115, 3172, 3416, 3560, 3640, 3965, 4270, 4628, 4984, 5429, 5551, 5785, 6230, 6344, 7930, 8099, 8540, 9256, 10858, 11102, 11570, 12460, 15860, 16198, 17080, 21716, 22204, 23140, 24920, 27145, 27755, 31720, 32396, 38003, 40495, 43432, 44408, 46280, 54290, 55510, 64792, 70577, 76006, 80990, 108580, 111020, 141154, 152012, 161980, 190015, 217160, 222040, 282308, 304024, 323960, 352885, 380030, 494039, 564616, 705770, 760060, 988078, 1411540, 1520120, 1976156, 2470195, 2823080, 3952312, 4940390, 9880780, 19761560]

約数ペア:

[(1, 19761560), (2, 9880780), (4, 4940390), (5, 3952312), (7, 2823080), (8, 2470195), (10, 1976156), (13, 1520120), (14, 1411540), (20, 988078), (26, 760060), (28, 705770), (35, 564616), (40, 494039), (52, 380030), (56, 352885), (61, 323960), (65, 304024), (70, 282308), (89, 222040), (91, 217160), (104, 190015), (122, 161980), (130, 152012), (140, 141154), (178, 111020), (182, 108580), (244, 80990), (260, 76006), (280, 70577), (305, 64792), (356, 55510), (364, 54290), (427, 46280), (445, 44408), (455, 43432), (488, 40495), (520, 38003), (610, 32396), (623, 31720), (712, 27755), (728, 27145), (793, 24920), (854, 23140), (890, 22204), (910, 21716), (1157, 17080), (1220, 16198), (1246, 15860), (1586, 12460), (1708, 11570), (1780, 11102), (1820, 10858), (2135, 9256), (2314, 8540), (2440, 8099), (2492, 7930), (3115, 6344), (3172, 6230), (3416, 5785), (3560, 5551), (3640, 5429), (3965, 4984), (4270, 4628)]