20431291280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3257}}^1\times {\mathrm{4127}}^1$

素因数の和:7416

約数の個数: 80

約数和(自身を含む): 50030369280

約数和(自身を除く): 29599078000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 3257, 4127, 6514, 8254, 13028, 16285, 16508, 20635, 26056, 32570, 33016, 41270, 52112, 61883, 65140, 66032, 78413, 82540, 123766, 130280, 156826, 165080, 247532, 260560, 309415, 313652, 330160, 392065, 495064, 618830, 627304, 784130, 990128, 1237660, 1254608, 1568260, 2475320, 3136520, 4950640, 6273040, 13441639, 26883278, 53766556, 67208195, 107533112, 134416390, 215066224, 255391141, 268832780, 510782282, 537665560, 1021564564, 1075331120, 1276955705, 2043129128, 2553911410, 4086258256, 5107822820, 10215645640, 20431291280]

約数ペア:

[(1, 20431291280), (2, 10215645640), (4, 5107822820), (5, 4086258256), (8, 2553911410), (10, 2043129128), (16, 1276955705), (19, 1075331120), (20, 1021564564), (38, 537665560), (40, 510782282), (76, 268832780), (80, 255391141), (95, 215066224), (152, 134416390), (190, 107533112), (304, 67208195), (380, 53766556), (760, 26883278), (1520, 13441639), (3257, 6273040), (4127, 4950640), (6514, 3136520), (8254, 2475320), (13028, 1568260), (16285, 1254608), (16508, 1237660), (20635, 990128), (26056, 784130), (32570, 627304), (33016, 618830), (41270, 495064), (52112, 392065), (61883, 330160), (65140, 313652), (66032, 309415), (78413, 260560), (82540, 247532), (123766, 165080), (130280, 156826)]