15781480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 43545600

約数和(自身を除く): 27764120

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 31, 40, 44, 52, 55, 62, 65, 88, 89, 104, 110, 124, 130, 143, 155, 178, 220, 248, 260, 286, 310, 341, 356, 403, 440, 445, 520, 572, 620, 682, 712, 715, 806, 890, 979, 1144, 1157, 1240, 1364, 1430, 1612, 1705, 1780, 1958, 2015, 2314, 2728, 2759, 2860, 3224, 3410, 3560, 3916, 4030, 4433, 4628, 4895, 5518, 5720, 5785, 6820, 7832, 8060, 8866, 9256, 9790, 11036, 11570, 12727, 13640, 13795, 16120, 17732, 19580, 22072, 22165, 23140, 25454, 27590, 30349, 35464, 35867, 39160, 44330, 46280, 50908, 55180, 60698, 63635, 71734, 88660, 101816, 110360, 121396, 127270, 143468, 151745, 177320, 179335, 242792, 254540, 286936, 303490, 358670, 394537, 509080, 606980, 717340, 789074, 1213960, 1434680, 1578148, 1972685, 3156296, 3945370, 7890740, 15781480]

約数ペア:

[(1, 15781480), (2, 7890740), (4, 3945370), (5, 3156296), (8, 1972685), (10, 1578148), (11, 1434680), (13, 1213960), (20, 789074), (22, 717340), (26, 606980), (31, 509080), (40, 394537), (44, 358670), (52, 303490), (55, 286936), (62, 254540), (65, 242792), (88, 179335), (89, 177320), (104, 151745), (110, 143468), (124, 127270), (130, 121396), (143, 110360), (155, 101816), (178, 88660), (220, 71734), (248, 63635), (260, 60698), (286, 55180), (310, 50908), (341, 46280), (356, 44330), (403, 39160), (440, 35867), (445, 35464), (520, 30349), (572, 27590), (620, 25454), (682, 23140), (712, 22165), (715, 22072), (806, 19580), (890, 17732), (979, 16120), (1144, 13795), (1157, 13640), (1240, 12727), (1364, 11570), (1430, 11036), (1612, 9790), (1705, 9256), (1780, 8866), (1958, 8060), (2015, 7832), (2314, 6820), (2728, 5785), (2759, 5720), (2860, 5518), (3224, 4895), (3410, 4628), (3560, 4433), (3916, 4030)]